Write down the solution for this math problem: Solve 468 = 44*x + 39*x - 119*x for x.
answer: -13

Write down the solution for this math problem: Solve -21*f + 342 = 36*f for f.
answer: 6

Write down the solution for this math problem: Solve -12*c + 28*c = -48 for c.
answer: -3

Write down the solution for this math problem: Solve 0 = 9*c - 1918 + 1972 for c.
answer:
-6