Subtract 2/24 from 28/21, Solve 1 7/21

Subtract 2/24 from 28/21

1^st number: 1 7/21, 2^nd number: 2/24

28/21 - 2/24 is 5/4.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 21 × 8 = 168,
28/21 = 28 × 8/21 × 8 = 224/168
Likewise, for the 2nd fraction, since 24 × 7 = 168,
2/24 = 2 × 7/24 × 7 = 14/168
Subtract the two like fractions:
224/168 - 14/168 = 224 - 14/168 = 210/168
After reducing the fraction, the answer is 5/4
In mixed form: 11/4

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