Subtract 5/72 from 21/14, Solve 1 7/14

Subtract 5/72 from 21/14

1^st number: 1 7/14, 2^nd number: 5/72

21/14 - 5/72 is 103/72.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 14 × 36 = 504,
21/14 = 21 × 36/14 × 36 = 756/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
5/72 = 5 × 7/72 × 7 = 35/504
Subtract the two like fractions:
756/504 - 35/504 = 756 - 35/504 = 721/504
After reducing the fraction, the answer is 103/72
In mixed form: 131/72

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