Question:
Solve -2*a = -7*a - 5 for a..

Answer:
-1

Question:
Solve -32*j + 926 = -391*j - 1587 for j..

Answer:
-7

Question:
Solve 50*u - 48*u = -4 for u..

Answer:
-2

Question:
Solve q - 62 + 76 = 2*q for q..

Answer:
14