Q: What is the solution?
Solve 0 = 2*u - 20 + 28 for u.

A: -4

Q: What is the solution?
Solve 147 + 813 = 69*l - 351 for l.

A: 19

Q: What is the solution?
Solve -101*t - 1142 = 6*t - 4138 for t.

A:
28