Solve -4*z = -3*v - 20, 2*v = -2*z - z + 15 for z.

5

Solve l + 2*l = c, -10 = -5*l + 5*c for l.

-1

Solve -5*x + 10*x = -20, 4*t + x + 4 = 0 for t.

0

Solve 8*g - 7*g = -9*d - 43, 5*d - 3*g + 31 = 0 for d.

-5

Solve -2*z + 10 = 2*o - 0, 4*o - 4 = 0 for z.

4

Solve -g + 3*o - 20 = -2*o, 2*g + 5*o - 20 = 0 for g.

0

Solve -5*h = -20, 2*q + 11*h - 6*h = 12 for q.

-4

Solve -6 = 4*a + 2*i, -a + 4*i = -0*a + 15 for a.

-3

Solve -12 = -0*x - 3*x + 5*a, -5*a = -2*x + 8 for x.

4

Solve -78*u + 81*u + n = 12, -3*u + 12 = -4*n for u.

4