Subtract 5/21 from 56/3, Solve 18 2/3

Subtract 5/21 from 56/3

1^st number: 18 2/3, 2^nd number: 5/21

56/3 - 5/21 is 129/7.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21

Next, find the equivalent fraction of both fractional numbers with denominator 21
For the 1st fraction, since 3 × 7 = 21,
56/3 = 56 × 7/3 × 7 = 392/21
Likewise, for the 2nd fraction, since 21 × 1 = 21,
5/21 = 5 × 1/21 × 1 = 5/21
Subtract the two like fractions:
392/21 - 5/21 = 392 - 5/21 = 387/21
After reducing the fraction, the answer is 129/7
In mixed form: 183/7

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