Question

Solve the system of equations.

4x - 4y = 10
3x + 2y = 5

Answer 1

4x - 4y = 10
3x + 2y = 5
we multiply the 2nd one by two
2(3x + 2y = 5)
6x + 4y = 10
4x - 4y - 6x - 4y = 0
-2x -8y = 0
-2x = 8y
x = -4y
4(-4y) -4y = 10
-20y = 10
y = - 10/20
y = -1/2
4x - 4(-1/2) = 10
4x - 2 = 10
4x = 12
x = 3
so : x = 3 and y = -1/2
hope that was helpful