Write down the solution for this math problem: Solve 26*w - 553 = -13*w - 163 for w.
answer: 10

Write down the solution for this math problem: Solve -83*r + 76*r = 0 for r.
answer: 0

Write down the solution for this math problem: Solve -72411 - 88914 = -1904*a - 39469 for a.
answer: 64

Write down the solution for this math problem: Solve 9652 + 5735 + 3227 = 318*w + 488 for w.
answer:
57