Solve 15*a - 21 = 9 for a.

2

Solve 49 = -16*z + 49 for z.

0

Solve n - 16*n + 60 = 0 for n.

4

Solve 75*m - 242*m = -668 for m.

4

Solve 0 = 5*s - 2 + 2 for s.

0

Solve 66*n - 144 = 90*n for n.

-6

Solve -6*l = 7*l - 39 for l.

3

Solve 31*u = 36*u for u.

0

Solve 28 - 2 = 13*n for n.

2

Solve -4*a + 7 = -11*a for a.

-1