Solve 230*y - 143 = 217*y for y.
Solve this plz.

A: 11

Solve 0 = -753*r + 742*r - 77 for r.
Solve this plz.

A: -7

Solve -13935*t + 302552 = -8807*t for t.
Solve this plz.

A:
59