QUESTION: Math problem: Solve -266*r + 991 = 2853 for r.
ANS: -7
QUESTION: Math problem: Solve 251*g = -261*g + 9216 for g.
ANS: 18
QUESTION: Math problem: Solve 10*w - 14*w + 20 = 0 for w.
ANS: 5
QUESTION: Math problem: Solve 219 = 20*y + 319 for y.
ANS:
-5