Solve -388*l + 491*l - 412 = 0 for l.
Solve this plz.

A: 4

Solve 918*h + 2639 + 9754 = 14571 - 144468 for h.
Solve this plz.

A: -155

Solve -7 = -252*o + 259*o for o.
Solve this plz.

A:
-1