Solve 16*r + 45*r = 610 for r.
Solve this plz.

A: 10

Solve -548*k + 6981*k - 1085040 = -3431*k for k.
Solve this plz.

A: 110

Solve 474912 = 6446*y + 129988 - 228770 for y.
Solve this plz.

A:
89