Question: What is the solution?

Solve -19 = 6*j - 7 for j.

Answer: -2

Question: What is the solution?

Solve 9175 = 132*o - 41*o + 276*o for o.

Answer: 25

Question: What is the solution?

Solve -21*a = 28*a - 50*a for a.

Answer: 0

Question: What is the solution?

Solve 9*q + 12*q = 37*q - 18*q for q.

Answer:
0