Solve 4*r + 4*j = -0*r + 20, -r + 5*j = 7 for r.

3

Solve -5*x - 2*w + 11 = -4*x, -3*x = -w + 2 for x.

1

Solve 10*a - 5*a - 3*u + 21 = 0, 3*a + 3*u + 3 = 0 for a.

-3

Solve y = 5*t - 13, t + 4*y - 11 = -0*y for t.

3

Solve 3*r - 8 = -4*k, 31*r - 5*k - 13 = 29*r for r.

4

Solve -2*b = 2*g - 4, -4*b = -4*g - 11 + 3 for b.

2

Solve 10 = 2*x, -2*b - 22 = -2*x - 12 for b.

0

Solve 3*k - 3 = -4*f - 13, -3*k = -3*f + 3 for k.

-2

Solve 2*r - 2 - 12 = 5*u, -3*r = -u - 8 for u.

-2

Solve 3 = -0*r - r + h, 3*h + 7 = -r for r.

-4