Question:
Solve 16*l - 618 = -5*l - 282 for l..

Answer:
16

Question:
Solve 76 = -22*k + 39*k - 162 for k..

Answer:
14

Question:
Solve 0 = 10*r - 8*r - 8 for r..

Answer:
4

Question:
Solve 561*k - 26171 = -48611 for k..

Answer:
-40