question: Teacher asked me this: Solve -207*a + 162*a - 885 = 15 for a.
++++++++++
answer: -20

question: Teacher asked me this: Solve 1613*x + 641*x = -556*x - 5620 for x.
++++++++++
answer: -2

question: Teacher asked me this: Solve 26*o - 65 + 186 = -113 for o.
++++++++++
answer: -9

question: Teacher asked me this: Solve -89*j - 280 = -54*j for j.
++++++++++
answer:
-8