Solve -1618*j + 243831 = 345765 for j.
Solve this plz.

A: -63

Solve 123*b + 87*b + 113*b + 6313 = 264*b for b.
Solve this plz.

A: -107

Solve 0 = 7*z - 5*z - 2 for z.
Solve this plz.

A:
1