Question: What is the solution?

Solve -87*t + 3*t - 660 + 1216 = -4316 for t.

Answer: 58

Question: What is the solution?

Solve 9*d + 3*d = 3*d + 162 for d.

Answer: 18

Question: What is the solution?

Solve -12*s - 8 = -20*s for s.

Answer: 1

Question: What is the solution?

Solve 0 = -21*a + 14 - 119 for a.

Answer:
-5