elimination:
-12x - 8y = -96
12x - 21y = 9
add to get
-29y = -87
y = 3
Or, using substitution, since x = (2y-24)/3,
4(2y-24)/-3 - 7y = 3
4(2y-24) + 21y = -9
8y-96+21y = -9
29y = 87
y=3
Solve the system of equations.
-3x-2y=-24
4x-7y=3
1 answer