question: Teacher asked me this: Solve -68*y = -58*y + 140 for y.
++++++++++
answer: -14

question: Teacher asked me this: Solve 7*t + 9*t = -16 for t.
++++++++++
answer: -1

question: Teacher asked me this: Solve 0 = 60*v + 75*v - 110*v - 75 for v.
++++++++++
answer: 3

question: Teacher asked me this: Solve 0 = -42*l + 99*l - 49*l + 168 for l.
++++++++++
answer:
-21