Question: What is the solution?

Solve 2*l + 16*l = -47 - 97 for l.

Answer: -8

Question: What is the solution?

Solve 3*b + 1683 - 852 = 852 for b.

Answer: 7

Question: What is the solution?

Solve 4*u + 50 = 14*u for u.

Answer: 5

Question: What is the solution?

Solve -217 + 134 = -20*k + 177 for k.

Answer:
13