question: Teacher asked me this: Solve 20*z = 25*z + 20 for z.
++++++++++
answer: -4

question: Teacher asked me this: Solve 4 = -d + 1 for d.
++++++++++
answer: -3

question: Teacher asked me this: Solve 2*v + 48766 = 669*v - 29940 for v.
++++++++++
answer: 118

question: Teacher asked me this: Solve 3*j - 4*j = -11 for j.
++++++++++
answer:
11