Q: What is the solution?
Solve -60*r + 341 + 117 = -262 for r.

A: 12

Q: What is the solution?
Solve 10 = -d - 4*d for d.

A: -2

Q: What is the solution?
Solve 0 = 107*d - 1447 - 158 for d.

A:
15