Solve z + 3 = 0, -3*i - 7*z = -3*z + 12 for i.

0

Solve 2*o + 10 = d, -d - 12 = 4*o - 4 for o.

-3

Solve -4*a = -4, -10*r + 15 = -14*r - 5*a for r.

-5

Solve -9*y + 6*y + x = 10, 0 = 5*y + x + 6 for y.

-2

Solve 2*i = 5*z + 33, -151*i + 146*i + 4*z = -40 for i.

4

Solve 4*b + 8 = -4*u + 28, -2*u = b - 6 for u.

1

Solve 3*b = -z, 6*b + 4*z = 3*b - 18 for b.

2

Solve -7*g - 9 = -10*g, -2*k = 3*g - 13 for k.

2

Solve 0 = v + 5*o + 2 + 7, 0 = -5*v + 2*o - 18 for v.

-4

Solve 4*c = -3*w - 11, 0*w - 4*c - 23 = -w for w.

3