Write down the solution for this math problem: Solve -14*a + 1520 = 9*a + 44*a + 28*a for a.
answer: 16

Write down the solution for this math problem: Solve 0 = 141*q + 1301 - 314 for q.
answer: -7

Write down the solution for this math problem: Solve 81*z = 142*z - 73*z - 108 for z.
answer: -9

Write down the solution for this math problem: Solve 19*i + 13*i - 52 = 19*i for i.
answer:
4