Write down the solution for this math problem: Solve -15*w = 11 + 4 for w.
answer: -1

Write down the solution for this math problem: Solve 277 + 101 - 63 = 45*a for a.
answer: 7

Write down the solution for this math problem: Solve 7*f = 4*f for f.
answer: 0

Write down the solution for this math problem: Solve 14*f - 148 + 134 = 0 for f.
answer:
1