question: Teacher asked me this: Solve 0 = 204*d - 144*d - 360 for d.
++++++++++
answer: 6

question: Teacher asked me this: Solve 0 = -5*a + 2*a - 15 for a.
++++++++++
answer: -5

question: Teacher asked me this: Solve 14*z - 69 = -97 for z.
++++++++++
answer: -2

question: Teacher asked me this: Solve 1957*k - 1491 = 1886*k for k.
++++++++++
answer:
21