question: Teacher asked me this: Solve -16987 - 3372 = -629*y - 915*y - 1831 for y.
++++++++++
answer: 12

question: Teacher asked me this: Solve 118465 - 126945 = 4240*r for r.
++++++++++
answer: -2

question: Teacher asked me this: Solve -10*o = 21 + 124 + 165 for o.
++++++++++
answer: -31

question: Teacher asked me this: Solve 270*h + 486*h - 17733 = 29139 for h.
++++++++++
answer:
62