Solve -116*t + 2715 = -163*t - 134*t for t.
Solve this plz.

A: -15

Solve -29*b + 26*b = 12 for b.
Solve this plz.

A: -4

Solve -77*o + 1520878 = 1526268 for o.
Solve this plz.

A:
-70