question: Teacher asked me this: Solve -15*y = -13*y - 20 for y.
++++++++++
answer: 10

question: Teacher asked me this: Solve -28*j - 85 - 87 = -63 + 143 for j.
++++++++++
answer: -9

question: Teacher asked me this: Solve 109 - 121 = 3*h for h.
++++++++++
answer: -4

question: Teacher asked me this: Solve 3*h + 7 = -4*h for h.
++++++++++
answer:
-1