Write down the solution for this math problem: Solve 51*o + 11*o = 49*o for o.
answer: 0

Write down the solution for this math problem: Solve -49 = 16*d - 9*d for d.
answer: -7

Write down the solution for this math problem: Solve 23*k - 135 = -89 for k.
answer: 2

Write down the solution for this math problem: Solve -684*j + 8 = -654*j + 68 for j.
answer:
-2