QUESTION: Math problem: Solve -2*u = 6 - 6 for u.
ANS: 0
QUESTION: Math problem: Solve 320*r - 6713 = 87*r - 726*r for r.
ANS: 7
QUESTION: Math problem: Solve 1105*v = -1070*v + 522*v + 31407 for v.
ANS: 19
QUESTION: Math problem: Solve -2756*u - 1807*u + 1626*u - 38181 = 0 for u.
ANS:
-13