Write down the solution for this math problem: Solve 644*w - 179*w = 196*w + 188*w + 1863 for w.
answer: 23

Write down the solution for this math problem: Solve -108 = -4*o - 112 for o.
answer: -1

Write down the solution for this math problem: Solve -10227*n + 6741*n - 411348 = 0 for n.
answer: -118

Write down the solution for this math problem: Solve k = -7*k + 4*k for k.
answer:
0