Q: Solve:
Solve 0 = -8*a + 5*a - 4*a for a.

A: 0

Q: Solve:
Solve -7*z + 138 = 131 for z.

A: 1

Q: Solve:
Solve 72*t + 1628 + 3916 = 0 for t.

A:
-77