question: Teacher asked me this: Solve 0 = -k + 63 + 75 - 216 + 63 for k.
++++++++++
answer: -15

question: Teacher asked me this: Solve -2112 = 1533*r + 1473*r - 2940*r for r.
++++++++++
answer: -32

question: Teacher asked me this: Solve 5*t = 97 - 122 for t.
++++++++++
answer: -5

question: Teacher asked me this: Solve 1001*m + 669*m - 104956 - 16954 = 0 for m.
++++++++++
answer:
73