Write down the solution for this math problem: Solve -13*j - 112 - 86 = 23 for j.
answer: -17

Write down the solution for this math problem: Solve -187*u - 26352 = 584*u - 2451 for u.
answer: -31

Write down the solution for this math problem: Solve 45*d = 56 + 124 for d.
answer: 4

Write down the solution for this math problem: Solve -902*o + 15631 - 62761 = 669*o for o.
answer:
-30