QUESTION: Math problem: Solve -786*r - 786*r + 1573*r + 20 = 0 for r.
ANS: -20
QUESTION: Math problem: Solve 10*s - 58*s = 69*s - 3393 for s.
ANS: 29
QUESTION: Math problem: Solve 3218 = 95*z + 474 - 486 for z.
ANS: 34
QUESTION: Math problem: Solve 0 = 46*d - 603 + 27 + 24 for d.
ANS:
12