Problem: Math Problem
Solve 7*z + 207 - 172 = 0 for z.

A: -5

Problem: Math Problem
Solve -2449*r + 153*r = 9577 + 39378 + 29109 for r.

A: -34

Problem: Math Problem
Solve 683*j - 666*j = 187 for j.

A:
11