Solve 4*f = 8*q - 7*q - 2, -f = -4*q - 7 for f.

-1

Solve -4*s = d - 7*s, -5*s = -3*d for d.

0

Solve 3*d + 12*t = 7*t - 19, 3*t + 12 = -2*d for d.

-3

Solve -4*z = 5*u - 12, -z - 579 = -582 for u.

0

Solve 3*w + 10 = 2*j, -j - 5*w - 12 = -2*j for j.

2

Solve -2*u + 15 = f + 7, 2*u - 2*f - 14 = 0 for u.

5

Solve -2*i + 11 = -2*l + i, -13 = 3*l - i for l.

-4

Solve -6*v + 14 = -5*j, -4*v + 4*j = -7*v + 20 for v.

4

Solve 2*p + 12 = -3*j - p, 2*j - 2*p = 12 for j.

1

Solve -i + 3*a = 10, 4*i - 301*a = -296*a - 19 for i.

-1