Subtract 15/28 from 21/3, Solve 7 0/3

Subtract 15/28 from 21/3

1^st number: 7 0/3, 2^nd number: 15/28

21/3 - 15/28 is 181/28.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 28 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 3 × 28 = 84,
21/3 = 21 × 28/3 × 28 = 588/84
Likewise, for the 2nd fraction, since 28 × 3 = 84,
15/28 = 15 × 3/28 × 3 = 45/84
Subtract the two like fractions:
588/84 - 45/84 = 588 - 45/84 = 543/84
After reducing the fraction, the answer is 181/28
In mixed form: 613/28

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