Question:
Solve -6*w = -3 + 15 for w..

Answer:
-2

Question:
Solve -19*x = -23*x - 4 for x..

Answer:
-1

Question:
Solve 0 = 92*l - 87*l - 15 for l..

Answer:
3

Question:
Solve 277*t = 1964 + 3299 for t..

Answer:
19