Write down the solution for this math problem: Solve -i + 50 - 46 = 0 for i.
answer: 4

Write down the solution for this math problem: Solve 195*f = 155*f - 157*f - 311*f + 25400 for f.
answer: 50

Write down the solution for this math problem: Solve 443178*s - 443134*s = -44 for s.
answer: -1

Write down the solution for this math problem: Solve -110*w - 2811 - 1285 = 146*w for w.
answer:
-16