Solve 2*d - 3*r + 1 - 2 = 0, 5*d - 2*r - 19 = 0 for d.

5

Solve -3*r + y - 15 = 0, -3*r + 0*r = -2*y + 18 for r.

-4

Solve -2*y - 5*n - 8 = -5*y, n = y for y.

-4

Solve d = -5*y + 4*d + 9, 4*y = 3*d + 6 for y.

3

Solve 5*z - 45 = 5*o, -3*z + 8*z + 2*o = 17 for z.

5

Solve 4*c - 3*u + 28 = 0, -5*u + 191 = 171 for c.

-4

Solve 3*b = 6*s + s + 22, -s - 10 = 3*b for s.

-4

Solve -4*f = -5*b - 11, 2*b + 9*f + 14 = 13*f for b.

1

Solve -2*m = 6, 5*h = 4*h + m + 7 for h.

4

Solve -12 = 3*y + 3*l, -3*l - 2 = -2*y - 0*l for y.

-2