Subtract 72/24 from 21/4, Solve 5 1/4

Subtract 72/24 from 21/4

1^st number: 5 1/4, 2^nd number: 3 0/24

21/4 - 72/24 is 9/4.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 24 is 24

Next, find the equivalent fraction of both fractional numbers with denominator 24
For the 1st fraction, since 4 × 6 = 24,
21/4 = 21 × 6/4 × 6 = 126/24
Likewise, for the 2nd fraction, since 24 × 1 = 24,
72/24 = 72 × 1/24 × 1 = 72/24
Subtract the two like fractions:
126/24 - 72/24 = 126 - 72/24 = 54/24
After reducing the fraction, the answer is 9/4
In mixed form: 21/4

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