Write down the solution for this math problem: Solve 60*k - 11*k - 147 = 0 for k.
answer: 3

Write down the solution for this math problem: Solve 5*w = -31*w + 108 for w.
answer: 3

Write down the solution for this math problem: Solve -36*b = -39*b + 21 for b.
answer: 7

Write down the solution for this math problem: Solve -10*g + 18 = -g for g.
answer:
2