Question: What is the solution?

Solve 5*m = -4 + 14 for m.

Answer: 2

Question: What is the solution?

Solve -84*d + 67*d - 26*d = 387 for d.

Answer: -9

Question: What is the solution?

Solve -14*i + 19*i = -15 for i.

Answer: -3

Question: What is the solution?

Solve -68*q + 2820 = -53*q + 126*q for q.

Answer:
20