Solve -3*k + 45*j - 42*j = -12, 2*k + 3*j = -7 for k.

1

Solve -w + 4*w = 2*t + 11, 5*t - 5*w = -15 for t.

2

Solve 2*t - 15 = 5*a, 0 = -2*a + 3*t - t for a.

-5

Solve -5*k - 3*m + 15 = 0, -2*k + 2*m = -2*m - 6 for k.

3

Solve -7 - 14 = 5*b - 2*f, 5*f = -2*b - 20 for b.

-5

Solve 3*o = -k - 5, -k - 1 = 4*o - 3*o for k.

1

Solve 101*f = 99*f + 4*v + 10, -2*f - 2*v = 14 for f.

-3

Solve 0 = -3*b + 5*h + 11, 8 + 11 = -5*b - h for b.

-3

Solve -5*i = -k + 21, i = -0*i - 3*k - 17 for i.

-5

Solve 15 + 5 = 5*s - 5*a, 4*s - 13 = a for s.

3