question: Teacher asked me this: Solve -56*o - 689 = 182*o + 1215 for o.
++++++++++
answer: -8

question: Teacher asked me this: Solve -117*z - 990 = -183*z for z.
++++++++++
answer: 15

question: Teacher asked me this: Solve 2*t - 20*t = -144 for t.
++++++++++
answer: 8

question: Teacher asked me this: Solve 74 - 42 + 64 = 8*h for h.
++++++++++
answer:
12