Subtract 72/63 from 27/75, Solve 27/75

Subtract 72/63 from 27/75

1^st number: 27/75, 2^nd number: 1 9/63

27/75 - 72/63 is -137/175.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 63 is 1575

Next, find the equivalent fraction of both fractional numbers with denominator 1575
For the 1st fraction, since 75 × 21 = 1575,
27/75 = 27 × 21/75 × 21 = 567/1575
Likewise, for the 2nd fraction, since 63 × 25 = 1575,
72/63 = 72 × 25/63 × 25 = 1800/1575
Subtract the two like fractions:
567/1575 - 1800/1575 = 567 - 1800/1575 = -1233/1575
After reducing the fraction, the answer is -137/175

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