0
Solve this equation using addition method 4a subtract 5b equals 7 and 4a plus 5b equals 17?
Wiki User
∙ 13y ago
Add the equations: 4a + 4a - 5b + 5b = 7 + 17
ie 8a = 24
a = 3, so b = 1
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What number subtracted from 8 gives you 2 09?
8.00 − 5.91 = 2.09 (Method is to first subtract 2.09 from 8.00, which equals 5.91 If you then subtract 5.91 from 8.00 the answer will be 2.09)
What is the answer to x-y equals 2 2x plus 3y equals 4 using multipication and addition method?
x - y = 2 : Equation 1 2x + 3y = 4 : Equation 2 Multiplying Equation 1 by 3 gives 3x - 3y = 6 : Equation 3 Adding Equation 2 to Equation 3 gives 5x = 10 Dividing both sides by 5 gives x = 5 Substituting x=5 into Equation 1 gives 5 - y = 2 Therefore y = 3. Our final answer is therefore x=5 and y=3
What does the phrase undoing the operations in reverse of the order of operations mean?
This might refer to the method used to solve an equation. Take, for example, the equation: 2x + 1 = 15 To solve this for x, the "x" must be isolated on the left. The multiplication and addition must be "undone" - that is, the inverse operation must be applied. Also, since multiplication is carried out before addition, this "undoing" should be applied in the inverse order - in this case, undo the addition first. What you end up doing, in this case, is first, subtract one from both sides, leaving you with: 2x = 14 and then, divide both sides by 2.
How do you use the elimination method using 5x plus 3y equals -6 and 3x subtract 2y equals 4?
5x + 3y = -63x - 2y = 4 (multiply by 2 the first equation, multiply by 3 the second equation)10x + 6y = -129x - 6y = 12 (add both the equations)19x = 0 (divide by 19 both sides)x = 0 (substitute 0 for x into the first equation)5x + 3y = -65(0) + 3y = -63y = -6 (divide by 3 to both sides)y = -2Thus, (0, -2) is the solution of the given system of the equations.
Describe the solution to the system of equations 5x - y equals 8 and 25x-5y equals 32?
Substitution method: from first equation y = 5x - 8. In the second equation this gives 25x - 5(5x - 8) = 32 ie 25x - 25x + 40 = 32 ie 40 = 32 which is not possible, so the system has no solution. Multiplication method: first equation times 5 gives 25x - 5y = 40, but second equation gives 32 as the value of the identical expression. No solution.
Solve this equation using addition method -8x plus 3y equals -5 and 8x subtract 2y equals 6?
x=1, y=1
Solving systems by elimination method X plus y equals 2 and 2x plus 7y equals 9?
Double first equation: 2x + 2y = 4 Subtract this from second equation giving 5y = 5 so y = 1 and x = 1
What is 6a - 5b equals 9 using addition method?
You need two equations to use the addition method.
How do you solve each system by the addition method?
solve system equation using addition method 3x-y=9 2x+y=6
Use the substitution method to solve the following system of linear equations -3x-y equals 3 -3x-5y equals -21?
From first equation, -y = 3x + 3. Substitute in second equation: -3x + 5(3x + 3) = -21 ie 12x = -36 so x = -3 and y = -(-9 + 3) = 6. Easier method: subtract first equation from second giving -4y = -24 so y = 6, this in first equation gives -6 = 3x + 3, ie 3x = -9 so x = -3
What number subtracted from 8 gives you 2 09?
8.00 − 5.91 = 2.09 (Method is to first subtract 2.09 from 8.00, which equals 5.91 If you then subtract 5.91 from 8.00 the answer will be 2.09)
Solve the equation by substitution method x-y equals 5?
x+y=5
How do you Solve this system of equations using the addition method 6a - 5b equals 9 2a plus 5b equals 23?
the answer
Solve py plus qz equals pq by charpit method in partial differential equation?
z=pq
How do I solve whole number equations that contain addition or subtraction?
The answer depends on the equation: there is no single method which can be used for all equations.
What is the answer to x-y equals 2 2x plus 3y equals 4 using multipication and addition method?
x - y = 2 : Equation 1 2x + 3y = 4 : Equation 2 Multiplying Equation 1 by 3 gives 3x - 3y = 6 : Equation 3 Adding Equation 2 to Equation 3 gives 5x = 10 Dividing both sides by 5 gives x = 5 Substituting x=5 into Equation 1 gives 5 - y = 2 Therefore y = 3. Our final answer is therefore x=5 and y=3
2x-3y equals -2 4x plus y equals 24 use substitution method and work the system of equation?
how do you use the substitution method for this problem 2x-3y=-2 4x+y=24
