Subtract 7/63 from 27/90, Solve 27/90

Subtract 7/63 from 27/90

27/90 - 7/63 is 17/90.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
27/90 = 27 × 7/90 × 7 = 189/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
7/63 = 7 × 10/63 × 10 = 70/630
Subtract the two like fractions:
189/630 - 70/630 = 189 - 70/630 = 119/630
After reducing the fraction, the answer is 17/90

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