Question:
Solve -50 - 49 = -30*l + 51 for l..

Answer:
5

Question:
Solve -464*z + 129*z - 6365 = 0 for z..

Answer:
-19

Question:
Solve 36 = 16*n + 2*n for n..

Answer:
2

Question:
Solve -2309 = 454*d - 9573 for d..

Answer:
16