question: Teacher asked me this: Solve 63*m - 630 = -3*m - 4*m for m.
++++++++++
answer: 9

question: Teacher asked me this: Solve 67*s - 340 - 531 = 0 for s.
++++++++++
answer: 13

question: Teacher asked me this: Solve -1582412*t + 1582414*t = -66 for t.
++++++++++
answer: -33

question: Teacher asked me this: Solve -139*f + 227*f = 115*f - 189 for f.
++++++++++
answer:
7