Q: Solve 633*r + 2*r + 253*r + 228*r - 120528 = 0 for r.

A: 108

Q: Solve 0 = -103*n + 28*n + 2665 + 785 for n.

A: 46

Q: Solve -42*v - 174 = -13*v for v.

A: -6

Q: Solve 9922 = -1232*q - 534*q + 541*q - 4778 for q.

A:
-12