Solve x + 72 = 13*x for x.

6

Solve 15*i - 20*i - 10 = 0 for i.

-2

Solve 6*r - 2*r - 4 = 0 for r.

1

Solve -53 = -53*l - 53 for l.

0

Solve -67*h = -61*h - 24 for h.

4

Solve -13*l + 73 = -5 for l.

6

Solve -2*d + 2 = -2 for d.

2

Solve 0 = -f + 2 + 2 for f.

4

Solve 15 = -5*l - 10 for l.

-5

Solve -77*j = -72*j - 45 for j.

9