Write down the solution for this math problem: Solve 0 = -16*d + 28*d + 10 + 938 - 120 for d.
answer: -69

Write down the solution for this math problem: Solve 10*v - 4*v = 5*v - 3 for v.
answer: -3

Write down the solution for this math problem: Solve -1547*s - 240929 = 4056*s for s.
answer: -43

Write down the solution for this math problem: Solve 0 = -28*v + 63 + 49 for v.
answer:
4