Question:
Solve -20*q + 4*q + 8*q = -40 for q..

Answer:
5

Question:
Solve -27*y = -34*y - 28 for y..

Answer:
-4

Question:
Solve -240 = 63*m - 15*m for m..

Answer:
-5

Question:
Solve -10*w - 10 = 40 for w..

Answer:
-5