Write down the solution for this math problem: Solve 30*x - 165 = 63*x + 363 for x.
answer: -16

Write down the solution for this math problem: Solve 278*y - 73*y + 16632 = -198*y - 191*y for y.
answer: -28

Write down the solution for this math problem: Solve -1890 = -5318310*k + 5318265*k for k.
answer: 42

Write down the solution for this math problem: Solve 655 = 852*x - 831*x + 235 for x.
answer:
20