Solve -x - 7 = 2*x + 4*y, 3*y + 3 = 0 for x.

-1

Solve -6 = -2*f, 8*r = 4*r + f + 9 for r.

3

Solve 0 = 4*k + 2*d - 6*d - 28, -5*d - 29 = -2*k for k.

2

Solve -3*b = -2*j + 8, -5*j + b - 8 + 15 = 0 for j.

1

Solve -5*o + 14 = -2*y, -9*o - 1 = -13*o + 5*y for o.

4

Solve 4*t = -d - 21, 0 = -5*t - 27*d + 26*d - 25 for t.

-4

Solve -2*f - 34 = -5*y - 13, 3*f - 3*y + 9 = 0 for f.

2

Solve 5*k = q - 5, 0 = 2*k - 4 + 8 for q.

-5

Solve -4*c - 5*x = 15, 78 = -c + 5*x + 68 for c.

-5

Solve 0*c - 4*c = -3*o - 27, -4*c - 4*o = 8 for c.

3