Solve 20*x - 3*r + 7 = 21*x, 0 = 4*x + 4*r - 12 for x.

1

Solve -9 = -l + 4*p, -2*l - l - 2*p = -13 for l.

5

Solve 0 = 4*p + t + 24, -27*p + 22*p - 3*t - 37 = 0 for p.

-5

Solve -3*f - i = 2, 4 = 2*f + 3*i - i for f.

-2

Solve -10 = -5*h + 5*x, 5*h - 4 + 39 = -4*x for h.

-3

Solve -5*y + 15 = 0, 0 = 26*o - 21*o + 3*y + 26 for o.

-7

Solve 2*d + l = d + 7, 5*l + 5 = 5*d for d.

4

Solve -2*i - 4*f + 3 + 5 = 0, i - 3*f = -11 for i.

-2

Solve 16 = 4*p, 0 = 6*b - 7*b + 4*p - 12 for b.

4

Solve -6 + 27 = 3*m + 3*g, 3*g = 15 for m.

2