Question:
Solve -30 = 3*h - 24 for h..

Answer:
-2

Question:
Solve 5730*y - 234213 = 1621*y for y..

Answer:
57

Question:
Solve -9893*x + 1464 - 37 = -9857*x - 913 for x..

Answer:
65

Question:
Solve -24 + 3 = 7*z for z..

Answer:
-3