Solve -10*t + 80 = -30 for t.
Solve this plz.

A: 11

Solve -1510*r + 16246 = -2468*r + 1193*r - 1144 for r.
Solve this plz.

A: 74

Solve 1255*x - 120935 - 21512 = -429*x + 24269 for x.
Solve this plz.

A:
99