question: Teacher asked me this: Solve 0*t - 10 = -5*t for t.
++++++++++
answer: 2

question: Teacher asked me this: Solve 21*x + 4161 - 3783 = 0 for x.
++++++++++
answer: -18

question: Teacher asked me this: Solve -2*l - 2759 + 2704 = 9*l for l.
++++++++++
answer: -5

question: Teacher asked me this: Solve 11*r + 55386 = 7*r + 55570 for r.
++++++++++
answer:
46