Q: Solve 39 = -12*x + x - 2*x for x.

A: -3

Q: Solve -6846*q - 7435 = -7241*q + 5995 for q.

A: 34

Q: Solve 0 = -7*a - 12*a for a.

A: 0

Q: Solve -10*i + 17 = 17 for i.

A:
0