Write down the solution for this math problem: Solve 591*z + 620*z - 1919*z + 7482 = -622*z for z.
answer: 87

Write down the solution for this math problem: Solve -353*z = 11*z + 45136 for z.
answer: -124

Write down the solution for this math problem: Solve -10*k = -3*k - 7 for k.
answer: 1

Write down the solution for this math problem: Solve -21*v = -263 + 11 for v.
answer:
12