Question:
Solve -70*j = -79*j - 81 for j..

Answer:
-9

Question:
Solve 0 = -2*b - 36 + 42 for b..

Answer:
3

Question:
Solve 2970 = 1437*h - 843*h for h..

Answer:
5

Question:
Solve 174*k = 56*k + 1244 + 290 for k..

Answer:
13