Subtract 14/60 from 28/21, Solve 1 7/21

Subtract 14/60 from 28/21

1^st number: 1 7/21, 2^nd number: 14/60

28/21 - 14/60 is 11/10.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 21 × 20 = 420,
28/21 = 28 × 20/21 × 20 = 560/420
Likewise, for the 2nd fraction, since 60 × 7 = 420,
14/60 = 14 × 7/60 × 7 = 98/420
Subtract the two like fractions:
560/420 - 98/420 = 560 - 98/420 = 462/420
After reducing the fraction, the answer is 11/10
In mixed form: 11/10

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