Write down the solution for this math problem: Solve 0*r + 169 - 129 - 152 = -7*r for r.
answer: 16

Write down the solution for this math problem: Solve 0 = -b + 3*b - 8 for b.
answer: 4

Write down the solution for this math problem: Solve -50*j + 338*j - 42482 = -369*j - 14231 for j.
answer: 43

Write down the solution for this math problem: Solve 0*q = 12*q - 48 for q.
answer:
4