question: Teacher asked me this: Solve 0 = 221*l - 347*l - 3530 - 1888 for l.
++++++++++
answer: -43

question: Teacher asked me this: Solve -3*m + 11 = -16 + 6 for m.
++++++++++
answer: 7

question: Teacher asked me this: Solve 129 = -3*r + 43 + 23 for r.
++++++++++
answer: -21

question: Teacher asked me this: Solve 0 = 6*h + 36*h - 252 for h.
++++++++++
answer:
6