Solve 31*t + 1583 = 622 for t.
Solve this plz.

A: -31

Solve 600 = 11998*p - 12018*p for p.
Solve this plz.

A: -30

Solve 104396 + 88544 = 2070*a + 16990 for a.
Solve this plz.

A:
85