Question:
Solve 4831*m + 1134 = 4912*m for m..

Answer:
14

Question:
Solve 56 = 14*r + 70 for r..

Answer:
-1

Question:
Solve 66*t + 699 = 19*t + 32*t - 261 for t..

Answer:
-64

Question:
Solve -61 = -27*j + 74 for j..

Answer:
5