Write down the solution for this math problem: Solve 0 = -978*w + 1001*w + 322 for w.
answer: -14

Write down the solution for this math problem: Solve 70*y + 180*y - 61*y = -65*y - 6858 for y.
answer: -27

Write down the solution for this math problem: Solve -21*t = -16*t + 25 for t.
answer: -5

Write down the solution for this math problem: Solve 356*a + 6434 = -5264 + 4578 for a.
answer:
-20