Question

How do I solve this equation using the substitution method
4x-3y=-7
4x+ 1y=-3

Answer 1

4x - 3y = -7
4x + y = -3
-4y = -4
-4 -4
y = 1
4x - 3y = -7
4x - 3(1) = -7
4x - 3 = -7
+ 3 + 3
4x = -4
4 4
x = -1
(x, y) = (-1, 1)