Question

Reduce:
45
63
HELP I cant figure it out

Answer 1

I assume you're talking about reducing the fraction 45/63.

We have

45 = 5 • 9 = 3² • 5

and

63 = 7 • 9 = 3² • 7

so that

45/63 = (3² • 5) / (3² • 7) = 5/7