Solve -2*f - 6 = r, -4*f - 9 - 7 = 0 for r.

2

Solve 2*u + 7 = 3*p, 3*p - 1 = 5*u - 6 for u.

4

Solve 21 = 48*h - 43*h - 4*l, -3*h - 4*l = -19 for h.

5

Solve 3*y - y + 2*r = 16, -24 = -5*y - r for y.

4

Solve 5*b - m + 139 = 153, -m - 2 = b for b.

2

Solve -17 = t - 4*o, -4*o - o = -15 for t.

-5

Solve -4*g - 2*t - 18 = 0, -20*t = -g - 21*t - 6 for g.

-3

Solve 0 = -4*d - 8, z + 3*d + 3 = -d for z.

5

Solve -5*g + 3 = -3*j, -5*g + 3 + 4 = -2*j for g.

3

Solve 2*a - 7*a + 25 = 0, 5*a - 41 = -4*u for u.

4