question: Teacher asked me this: Solve -4*u - 171 + 63 = -48 for u.
++++++++++
answer: -15

question: Teacher asked me this: Solve 39*r + 39*r = 23*r - 4*r + 1003 for r.
++++++++++
answer: 17

question: Teacher asked me this: Solve 176 = 334*t - 137*t - 109*t for t.
++++++++++
answer: 2

question: Teacher asked me this: Solve 14 = 8*m - 26 for m.
++++++++++
answer:
5