Solve -2*j + 4 = 0, -6*j + 9 + 13 = 5*a for a.

2

Solve 2*m - 6 = -5*i - 15, -i = -4*m + 15 for m.

3

Solve 12 = 3*z - 4*w, 8*w - 4*w = 2*z - 8 for z.

4

Solve 9*a - s = 10*a, -3*s = 4*a - 1 for a.

1

Solve n - 7 = -r - 4, -5*n = 2*r - 18 for n.

4

Solve 3*g = t + 2, -402*g - 5*t - 20 = -407*g for g.

-1

Solve -4*s + 54 - 51 = 3*k, -2*s - 2*k = 0 for s.

3

Solve -28*o = -29*o - 3*x + 12, -5*o - 4 = -x for o.

0

Solve -9*y + 2 = -11*y, 3*y - 22 = -5*p for p.

5

Solve b + 9 = -2*b, -9 = 3*x + 4*b for x.

1