Write down the solution for this math problem: Solve -168*x - 78 = 975 + 1803 for x.
answer: -17

Write down the solution for this math problem: Solve 3*u = -14 - 1 for u.
answer: -5

Write down the solution for this math problem: Solve -135*u - 4275 = 156*u - 6*u for u.
answer: -15

Write down the solution for this math problem: Solve -18 = -148*p + 151*p for p.
answer:
-6