Add 21/4 and 10/72, Solve 5 1/4 + 10/72 as a fraction

Add 21/4 and 10/72

1^st number: 5 1/4, 2^nd number: 10/72

21/4 + 10/72 is 97/18.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 4 × 18 = 72,
21/4 = 21 × 18/4 × 18 = 378/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
10/72 = 10 × 1/72 × 1 = 10/72
Add the two like fractions:
378/72 + 10/72 = 378 + 10/72 = 388/72
388/72 simplified gives 97/18
So, 21/4 + 10/72 = 97/18
In mixed form: 57/18

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