Q: Solve:
Solve -103*r + 186 + 119 = -210 for r.

A: 5

Q: Solve:
Solve 12*p + 156 = -27*p for p.

A: -4

Q: Solve:
Solve 0 = -0*n - 2*n + 8*n - 18 for n.

A:
3