question: Teacher asked me this: Solve 13*i = -5*i + 90 for i.
++++++++++
answer: 5
Solve 105*i + 7 = 112*i for i.
Solve this plz.

A: 1
QUESTION: Math problem: Solve 0 = -2*a - 107 + 113 for a.
ANS: 3
Q: What is the solution?
Solve 57 = -35*r - 96*r + 187*r - 111 for r.

A: 3
Write down the solution for this math problem: Solve z - 624 = 70*z + 3*z + 1392 for z.
answer: -28
question: Teacher asked me this: Solve 27 = 18*o - 21*o for o.
++++++++++
answer:
-9