Question:
Solve -54*t - 135*t = -86*t + 721 for t..

Answer:
-7

Question:
Solve -27*z - 45*z - 1690 = -466 for z..

Answer:
-17

Question:
Solve 85*i + 99*i - 5179 + 13524 = -14471 for i..

Answer:
-124

Question:
Solve -13*u - 27 + 40 = 0 for u..

Answer:
1