Question:
Solve -38779*w + 38820*w = 615 for w..

Answer:
15

Question:
Solve 207*h + 18827 = -210*h + 70*h + 66*h for h..

Answer:
-67

Question:
Solve 285692 = -241*r + 270027 for r..

Answer:
-65

Question:
Solve -988*n - 12*n = 332*n + 123876 for n..

Answer:
-93