6x+7y=-6 3(-2x-3y=2)
+________
-2y=0 => y=0
Therefore x=-1
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)
Add the equations: 4a + 4a - 5b + 5b = 7 + 17 ie 8a = 24 a = 3, so b = 1
3x + 2y = 4; 2x - 2y = 16 Add; 5x = 20 so x = 4 and y is therefore -4
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
3 & 5.