Q: Solve -13*d = -7*d - 6 for d.

A: 1
Q: Solve:
Solve 21*s + 308 - 121 = -149 for s.

A: -16
Question: What is the solution?

Solve -6*c + 1 = -7*c for c.

Answer: -1
Problem: Math Problem
Solve -418*j + 402*j = 0 for j.

A: 0
Question:
Solve 217 + 221 = -30*o + 48 for o..

Answer:
-13
Question:
Solve -6*r + 45 = -r for r..

Answer:
9