Q: Solve -168*b + 91*b = 2079 for b.

A: -27
Q: Solve:
Solve -138 = -28*r + 2 for r.

A: 5
Question: What is the solution?

Solve -202*a + 429*a - 202*a + 450 = 0 for a.

Answer: -18
Problem: Math Problem
Solve -132 = -27*r + 49*r for r.

A: -6
Question:
Solve -71*o + 15208 - 14001 = 0 for o..

Answer:
17
Q: What is the solution?
Solve -132*z + 138*z = -30 for z.

A:
-5