Q: Solve:
Solve 240 = 25*u + 15*u for u.

A: 6

Q: Solve:
Solve -18*g = 2*g + 14*g + 272 for g.

A: -8

Q: Solve:
Solve 127*k - 63*k = -119*k - 1830 for k.

A:
-10