Write down the solution for this math problem: Solve 4600*n - 4625*n - 25 = 0 for n.
answer: -1

Write down the solution for this math problem: Solve 12*q + 14*q - 16 = 140 for q.
answer: 6

Write down the solution for this math problem: Solve -71*a = -78*a for a.
answer: 0

Write down the solution for this math problem: Solve 63*b + 147 = -99*b + 113*b for b.
answer:
-3