question: Teacher asked me this: Solve -45*g + 90*g = 46*g for g.
++++++++++
answer: 0

question: Teacher asked me this: Solve -122*t + 244*t = 121*t - 1 for t.
++++++++++
answer: -1

question: Teacher asked me this: Solve -h = 13 - 12 for h.
++++++++++
answer: -1

question: Teacher asked me this: Solve 5*a = -0*a + 20 for a.
++++++++++
answer:
4