Question:
Solve 35*h = 21*h - 56 for h..

Answer:
-4

Question:
Solve -5*r - 208 + 28 + 120 = 0 for r..

Answer:
-12

Question:
Solve -4716*p + 4700*p - 16 = 0 for p..

Answer:
-1

Question:
Solve -35*z + 2430 = 1765 for z..

Answer:
19