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What is the value of x and y in the simultaneous equations y equals x minus 1 and y equals 2x minus 5?
Wiki User
∙ 11y ago
It follows that x - 1 = 2x - 5 as each expression is equal to y.
Add 1 to each side: x = 2x - 4
Add 4 to each side: x + 4 = 2x
Subtract x from each side: 4 = x
y = x - 1 = 3
Wiki User
∙ 11y ago
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What is the ordered pair of x-2y equals -4 2x-y equals 1?
This is a simultaneous equation question: x-2y = -4 2x-y = 1 Multiply all terms in the top equation by 2: 2x-4y = -8 2x-y = 1 Subtract the bottom equation from the top equation remembering that a minus minus equals a plus: -3y = -9 Divide both sides of the equation by -3 to find the value of y remembering that a minus divided by a minus equals a plus: y = 3 Substitute the value of y into the original equations to find the value of x: Solution: x = 2 and y = 3
X plus y equals 12 x - y equals 4?
Solve this simultaneous equation by the elimination method: x+y = 12 x-y = 4 Add both equations together: 2x = 16 Divide both sides by 2 to find the value of x: x = 8 Substitute the value of x into the original equations to find the value of y: Therefore: x = 8 and y = 4
How do you solve 3x plus 2y equals 5?
You cannot solve this equation without some more information. The value of y depends upon the value of x, but they could take infinitely many different values. Maybe this is just one of a pair of simultaneous equations? If so, you need both equations to find values for x and y.
X equals 8-2y y-x equals 4?
Presumably this is a simultaneous equation in the form of: x = 8-2y y-x = 4 Which is the same as: 2y+x = 8 y-x = 4 Add both equations together: 3y = 12. So y will equal 4. Substitute the value of y into the original equations to find the value of x: So: x = 0 and y = 4
2x plus 3y equals 3 and 4x minus 3y equals 9. What value of y is part of the solution for this system of equations?
There are two simultaneous equations, so to solve for y, eliminate x: 1) 2x + 3y = 3 2) 4x - 3y = 9 Multiply equation (1) by 2 giving: 1) 4x + 6y = 6 2) 4x - 3y = 9 Next, subtract equation (2) from equation (1), giving: (4x - 4x) + (6y - -3y) = 6 - 9 → 9y = -3 → y = -1/3
What is the ordered pair of x-2y equals -4 2x-y equals 1?
This is a simultaneous equation question: x-2y = -4 2x-y = 1 Multiply all terms in the top equation by 2: 2x-4y = -8 2x-y = 1 Subtract the bottom equation from the top equation remembering that a minus minus equals a plus: -3y = -9 Divide both sides of the equation by -3 to find the value of y remembering that a minus divided by a minus equals a plus: y = 3 Substitute the value of y into the original equations to find the value of x: Solution: x = 2 and y = 3
Y equals x plus 3 and 3x-y equals 5?
Solve this simultaneous equation using the elimination method after rearraging these equations in the form of: 3x-y = 5 -x+y = 3 Add both equations together: 2x = 8 => x = 4 Substitute the value of x into the original equations to find the value of y: So: x = 4 and y = 7
What are the solutions of the equation open absolute value x close absolute value minus 19 equals negative 3?
You can write this as two equations, and solve them separately. The two equations are:x - 19 = -3and:-x - 19 = -3
Solve the system of equations 3r -4s equals 0 and 2r plus 5s equals 23?
Presumably this is a simultaneous equation in the form of: 3r-4s = 0 2r+5s = 23 Multiply all the terms in the top equation by 2 and in the bottom equation by 3: 6r-8s = 0 6r+15s = 69 Subtract the bottom equation from the top equation: -23s = -69 Divide both sides by -23 to find the value of s remembering that a minus number divided into a minus number is equal to a plus number: s = 3 Substitute the value of s into the original equations to find the value of r: Therefore: r = 4 and s = 3
X plus y equals 12 x - y equals 4?
Solve this simultaneous equation by the elimination method: x+y = 12 x-y = 4 Add both equations together: 2x = 16 Divide both sides by 2 to find the value of x: x = 8 Substitute the value of x into the original equations to find the value of y: Therefore: x = 8 and y = 4
How do you solve this problem x plus y equals 72 x minus y equals 22?
x + y = 72 x - y = 22 Add both equations:- 2x = 94 Divide both sides by 2:- x = 47 Substitute the value of x into the equations to find the value of y:- Therefore: x = 47 and y = 25
How do you solve 3x plus 2y equals 5?
You cannot solve this equation without some more information. The value of y depends upon the value of x, but they could take infinitely many different values. Maybe this is just one of a pair of simultaneous equations? If so, you need both equations to find values for x and y.
X equals 8-2y y-x equals 4?
Presumably this is a simultaneous equation in the form of: x = 8-2y y-x = 4 Which is the same as: 2y+x = 8 y-x = 4 Add both equations together: 3y = 12. So y will equal 4. Substitute the value of y into the original equations to find the value of x: So: x = 0 and y = 4
What is the value of in the 40mm equations 100mm equals 11.70 and 150mm equals 34.20?
What is the value of what. You didnt specify. And this equations dont make sense. 100millimeters can equal 11.70 nothing and 150millimeters can equal 34.20 when 100mm equals 11.70. And what is the random 40mm for
The equations of two lines are 6x-y equals 4 and y equals 4x plus 2. What is the value of x in the solution for this system of equations?
x=3
Solve x plus y equals -4 x - y equals 2?
-2
2x plus 3y equals 3 and 4x minus 3y equals 9. What value of y is part of the solution for this system of equations?
There are two simultaneous equations, so to solve for y, eliminate x: 1) 2x + 3y = 3 2) 4x - 3y = 9 Multiply equation (1) by 2 giving: 1) 4x + 6y = 6 2) 4x - 3y = 9 Next, subtract equation (2) from equation (1), giving: (4x - 4x) + (6y - -3y) = 6 - 9 → 9y = -3 → y = -1/3
