Solve 0 = z - 2*z - 3 for z.

-3

Solve -615*y + 60 = -621*y for y.

-10

Solve 0*u = -2*u - 2 for u.

-1

Solve 8*o = -21 - 11 for o.

-4

Solve 7 = 2*s + 3 for s.

2

Solve -r - 234 = -234 for r.

0

Solve 54*s = -27*s + 486 for s.

6

Solve -73 + 28 = 9*f for f.

-5

Solve 30 = -100*o + 106*o for o.

5

Solve 8*x = -0 - 0 for x.

0