question: Teacher asked me this: Solve 139*r = -147*r + 100*r + 14508 for r.
++++++++++
answer: 78

question: Teacher asked me this: Solve 201 = 40*t - 119 for t.
++++++++++
answer: 8

question: Teacher asked me this: Solve 298*a - 9683 = -7183 + 9122 for a.
++++++++++
answer: 39

question: Teacher asked me this: Solve 3*f - 2*f + 4 = 0 for f.
++++++++++
answer:
-4