Subtract 1/28 from 21/15, Solve 1 6/15

Subtract 1/28 from 21/15

1^st number: 1 6/15, 2^nd number: 1/28

21/15 - 1/28 is 191/140.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 15 × 28 = 420,
21/15 = 21 × 28/15 × 28 = 588/420
Likewise, for the 2nd fraction, since 28 × 15 = 420,
1/28 = 1 × 15/28 × 15 = 15/420
Subtract the two like fractions:
588/420 - 15/420 = 588 - 15/420 = 573/420
After reducing the fraction, the answer is 191/140
In mixed form: 151/140

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