Question:
Solve -70*j + 457*j - 62*j = -6825 for j..

Answer:
-21

Question:
Solve 38969*w + 2085 = 43279*w - 10845 for w..

Answer:
3

Question:
Solve 155 + 210 = 115*n + 58*n - 500 for n..

Answer:
5

Question:
Solve 12 + 16 = -7*u for u..

Answer:
-4