Write down the solution for this math problem: Solve 21*t + 303 = -t + 39 for t.
answer: -12

Write down the solution for this math problem: Solve 978*x + 58420 - 11476 = 0 for x.
answer: -48

Write down the solution for this math problem: Solve -68 = -28*m + 72 for m.
answer: 5

Write down the solution for this math problem: Solve -1919 = -2405*b + 2506*b for b.
answer:
-19