question: Teacher asked me this: Solve 19*s + 4*s + 138 = 0 for s.
++++++++++
answer: -6

question: Teacher asked me this: Solve -69*a = 7*a - 3*a - 584 for a.
++++++++++
answer: 8

question: Teacher asked me this: Solve 143*t - 2513*t - 64720 = 53780 for t.
++++++++++
answer: -50

question: Teacher asked me this: Solve 3*m = -21 + 6 for m.
++++++++++
answer:
-5