Solve 21 = -2*a + 15 for a.

-3

Solve 12*a - 84 = 12 for a.

8

Solve 6*k - 4*k = 0 for k.

0

Solve 0 = -11*a + 38 - 27 for a.

1

Solve x + x = -10 for x.

-5

Solve 119*w = 120*w for w.

0

Solve 2*b + 10 = -3*b for b.

-2

Solve 48 = 19*h + 105 for h.

-3

Solve -6*b = -8*b + 4 for b.

2

Solve 143*q - 288 = 1142 for q.

10