Write down the solution for this math problem: Solve -1424 + 4845 = 139*a + 172*a for a.
answer: 11

Write down the solution for this math problem: Solve 323*b + 318*b + 5991 - 1819 = -6084 for b.
answer: -16

Write down the solution for this math problem: Solve 0 = -36*s + 1187 - 1223 for s.
answer: -1

Write down the solution for this math problem: Solve -3*z - 882 + 870 = 0 for z.
answer:
-4