Solve 9*z - 2*n = 4*z - 18, 4*z - 5*n + 28 = 0 for z.

-2

Solve -j + 17 = 3*d, 5*d = 4 + 21 for j.

2

Solve 0*m = m + 4*i - 17, 3*m + 3*i = 15 for m.

1

Solve -20 = -2*v - 3*v, r = -v + 3 for r.

-1

Solve 2*l + n - 7 = -10, -5*l + 3*n + 9 = 0 for l.

0

Solve -4*y = 4*a - 28, 138*a + 5*y = 140*a + 21 for a.

2

Solve -5*o - 9 = y, -16 = -4*o + 9*y - 4*y for o.

-1

Solve 4*x - y + 13 = 0, -y + 7 + 2 = -2*x for x.

-2

Solve -3*n = 2*v - 9, 5*v = -3*n + 7*n - 35 for v.

-3

Solve -2*g - 5*r + 1 = -10, -g = -2*r + 8 for g.

-2