Subtract 42/48 from 21/4, Solve 5 1/4

Subtract 42/48 from 21/4

1^st number: 5 1/4, 2^nd number: 42/48

21/4 - 42/48 is 35/8.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 48 is 48

Next, find the equivalent fraction of both fractional numbers with denominator 48
For the 1st fraction, since 4 × 12 = 48,
21/4 = 21 × 12/4 × 12 = 252/48
Likewise, for the 2nd fraction, since 48 × 1 = 48,
42/48 = 42 × 1/48 × 1 = 42/48
Subtract the two like fractions:
252/48 - 42/48 = 252 - 42/48 = 210/48
After reducing the fraction, the answer is 35/8
In mixed form: 43/8

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