Question:
Solve -7*d + 10*d = 3 for d..

Answer:
1

Question:
Solve -129 = -80*m + 111 for m..

Answer:
3

Question:
Solve 5172*h = 10480*h - 5606*h - 12218 for h..

Answer:
-41

Question:
Solve 1745*x - 1765*x = -1005*x - 84710 for x..

Answer:
-86