Q: Solve:
Solve 7*o + 11*o + 17*o - 210 = 14*o for o.

A: 10

Q: Solve:
Solve 10*q - 196 = -18*q for q.

A: 7

Q: Solve:
Solve 291*a + 709*a = 13000 for a.

A:
13