Write down the solution for this math problem: Solve 3 = -3*f + 2*f for f.
answer: -3

Write down the solution for this math problem: Solve 14*z + 6*z + 20 = 0 for z.
answer: -1

Write down the solution for this math problem: Solve 453*l - 439*l + 56 = 0 for l.
answer: -4

Write down the solution for this math problem: Solve 13*v = -219 - 310 + 347 for v.
answer:
-14