Wiki User
∙ 14y ago3x + 2y = 4; 2x - 2y = 16
Add; 5x = 20 so x = 4 and y is therefore -4
Wiki User
∙ 14y agox=1, y=1
You need two equations to use the addition method.
(2,-2)
Yes and it works out that x = 3 and y = 4
4
the answer
x=1, y=1
solve system equation using addition method 3x-y=9 2x+y=6
You need two equations to use the addition method.
8840-026
(2,-2)
6x+7y=-6 3(-2x-3y=2) +________ -2y=0 => y=0 Therefore x=-1
Add the equations: 4a + 4a - 5b + 5b = 7 + 17 ie 8a = 24 a = 3, so b = 1
Addition and subtraction are inverse operations. So you can solve addition by subtracting.
Yes and it works out that x = 3 and y = 4
4
When talking about a "system of equations", you would normally expect to have two or more equations. It is quite common to have as many equations as you have variables, so in this case you should have two equations.