Okay, I guess that the limitations of the WikiAnswers software prevented you from typing + and = signs, so I am guessing that the equations are as follows: (a) 5x + 11y = -2 (b) 2x + 9y = 13 Note: I have edited the question to coincide with equations (a) and (b). There are several ways to solve for x (and y). Multiply (a) by 2 and (b) by -5, so you now have: (a) 10x + 22y = -4 (b) -10x - 45y = -65 Now, add (a) and (b), being careful to keep the columns aligned. That yields: 0x - 23y = -69, which is (c) -23y = -69 Now, solve (c) for y by dividing both sides of the equation by -23. That leaves you with y = 3. Now that you have solved for y, you can substitute the value of y into either (a) or (b). Let's use (b) because that looks easier: 2x + 9y = 13 2x + 9(3) = 13 2x + 27 = 13 2x = -14 x = -7
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
First rearrange these simultaneous equations in the form of: 7x-4y = 26 5x-4y = 14 Subtract the bottom equation from the top equation remembering that a - - is equal to a plus. So, -4y - - 4y = 0 2x = 12 and therefore it follows that x = 6 Substitute the value of x into the original equations to find the value of y: Therefore: x = 6 and y = 4
you need two equations to answer it, or you need to know the value of x.
X=7
The present value is what it is worth today minus any surrender charges. The future value is what it will be worth in the future at a given interest rate and again minus any surrender charges if applicable.
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
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
You can write this as two equations, and solve them separately. The two equations are:x - 19 = -3and:-x - 19 = -3
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
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
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
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 + 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
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 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
-2
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