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

3

Solve -3*w + 2*s - 5 = -6, 2*s = 4*w for w.

-1

Solve 6 = -2*p, 2*d + 2 = -p + 5 for d.

3

Solve 5*y + 5*p = -38 + 58, -4*y - 4 = -p for y.

0

Solve -5*w - 4*b + 68 - 103 = 0, 0 = -4*b for w.

-7

Solve -9*f - 10 = 5*s - 14*f, -5*f - 20 = s for s.

-5

Solve 0 = -4*p - 8, 3*x + 60*p - 62*p = 16 for x.

4

Solve v = 4*t + 12, -4*t = -5*t + 5*v - 3 for t.

-3

Solve 2*c - 4*q = 22, -15*c + 12*c - 2*q + 1 = 0 for c.

3

Solve 5*m - 2 = -w + 5, -5*m - 5*w + 15 = 0 for m.

1