Question:
Solve 0 = -1553*x + 1776*x + 1784 for x..

Answer:
-8

Question:
Solve 11*h - 22 = -0 for h..

Answer:
2

Question:
Solve -78*r = -71*r + 68*r - 1650 for r..

Answer:
22

Question:
Solve -6*f + 5 = -1 for f..

Answer:
1