Write down the solution for this math problem: Solve -8654*x = -8644*x - 10 for x.
answer: 1

Write down the solution for this math problem: Solve -674*t - 4612 - 4659 = 11623 for t.
answer: -31

Write down the solution for this math problem: Solve -10*r + 15*r = 45 for r.
answer: 9

Write down the solution for this math problem: Solve -56*b = -38*b + 66*b - 672 for b.
answer:
8