question: Teacher asked me this: Solve -54 = -19*r + 22 for r.
++++++++++
answer: 4

question: Teacher asked me this: Solve 230 = -43*a + 95 + 6 for a.
++++++++++
answer: -3

question: Teacher asked me this: Solve -216*c - 226 - 334 = -279*c + 133*c for c.
++++++++++
answer: -8

question: Teacher asked me this: Solve 351 = 3878*y - 3917*y for y.
++++++++++
answer:
-9