Write down the solution for this math problem: Solve -723*x - 30 = -717*x for x.
answer: -5

Write down the solution for this math problem: Solve 1257*n - 1284*n + 32 = -454 for n.
answer: 18

Write down the solution for this math problem: Solve -10508*f - 5887 + 251 = -10374*f + 796 for f.
answer: -48

Write down the solution for this math problem: Solve 1416*t - 1699*t = 4245 for t.
answer:
-15