Question:
Solve -5*a - 34*a = -823 + 628 for a..

Answer:
5

Question:
Solve -67*c - 62729 = -57570 for c..

Answer:
-77

Question:
Solve 534 = -15*y + 444 for y..

Answer:
-6

Question:
Solve -4*g = 5 - 21 for g..

Answer:
4