Question

Write the prime factorization of 63 and 90 to reduce 63/90

Answer 1

63/90 = 7/10

Explanation:

63 = 3²×7

90 = 2×3²×5

The factor of 3² is common to both numbers, so the fraction reduces to ...

... 63/90 = (3²×7)/(3²×10) = 7/10