Write down the solution for this math problem: Solve -i + 97 = 96 for i.
answer: 1

Write down the solution for this math problem: Solve -34*k + 45 = -43*k for k.
answer: -5

Write down the solution for this math problem: Solve 3*x - 9 + 21 = 0 for x.
answer: -4

Write down the solution for this math problem: Solve -3*m - 390 + 411 = 0 for m.
answer:
7