Write down the solution for this math problem: Solve 953 + 930 = 146*r - 453 for r.
answer: 16

Write down the solution for this math problem: Solve 270 = -806*o + 776*o for o.
answer: -9

Write down the solution for this math problem: Solve -4*b + 2 - 18 = 0 for b.
answer: -4

Write down the solution for this math problem: Solve -l = 167 - 162 for l.
answer:
-5