Solve 4*f = x - 212 + 247, 2*f = -4*x + 4 for f.

8

Solve 2*w - 19 = -r + 4*r, 0 = 3*w + 3*r + 9 for w.

2

Solve 1 = -a + 5*k, 3*a - k + 21 = 8*a for a.

4

Solve -4*h = -5*d + 45, 4*d - h - 8 = 17 for d.

5

Solve 3*t + 2*r = 0, 5*t - 5*r = -0*t for t.

0

Solve -4*r + 4 = 4*q, 2*r - 2 = -3*q + 4*q for r.

1

Solve -5*i + 5 = -4*t, -4*i + 8 = -t - 7 for i.

5

Solve 3*g + 5*u = -31, 2*g + 3*u = 5*g - 9 for g.

-2

Solve 4*y + 13 = 5*c - 4, y + 2*c - 12 = 0 for y.

2

Solve f + n = 3*n, -2*f - 7 = 3*n for f.

-2