Solve 0*f + 21 = 3*r + 3*f, 4*f = 4*r - 4 for r.

4

Solve 2*q - 21*g + 17*g + 10 = 0, 3*q - g = 0 for q.

1

Solve 1 = -a - 4*c + 5, a - 5*c = -14 for a.

-4

Solve 6*r - 7*r + 4*h + 11 = 0, -h + 21 = -5*r for r.

-5

Solve -x = 3*q + 9, -46*x = -51*x + q + 19 for x.

3

Solve 2*n - 10*g = -8*g + 8, -n - g - 6 = 0 for n.

-1

Solve n - 5*i + 11 = 0, i + 5 = -3*n + 20 for n.

4

Solve -4*v + 10 = -2*j, -49 = -5*v + j - 41 for v.

1

Solve 3*v = 4*k + 3, k - 3*v + 12 = -6*v for k.

-3

Solve -5*l + 27 = -2*h, 10*h - 9*h = -2*l + 9 for l.

5