Write down the solution for this math problem: Solve 1134 = -12489*w + 12552*w for w.
answer: 18

Write down the solution for this math problem: Solve -247*w + 39*w + 12660 = 214*w for w.
answer: 30

Write down the solution for this math problem: Solve -2*w + 19*w = 5*w - 408 for w.
answer: -34

Write down the solution for this math problem: Solve -75*c = 84*c + 206*c + 4380 for c.
answer:
-12