Write down the solution for this math problem: Solve -10*d + 63 = 13 for d.
answer: 5

Write down the solution for this math problem: Solve -204 + 156 = -3*a + 15*a for a.
answer: -4

Write down the solution for this math problem: Solve -214*o - 74*o - 18354 = 349*o - 154*o for o.
answer: -38

Write down the solution for this math problem: Solve 15679*l = 15177*l + 23092 for l.
answer:
46