Add 21/72 and 42/14, Solve 21/72 + 3 0/14 as a fraction

Add 21/72 and 42/14

1^st number: 21/72, 2^nd number: 3 0/14

21/72 + 42/14 is 79/24.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 14 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504
Likewise, for the 2nd fraction, since 14 × 36 = 504,
42/14 = 42 × 36/14 × 36 = 1512/504
Add the two like fractions:
147/504 + 1512/504 = 147 + 1512/504 = 1659/504
1659/504 simplified gives 79/24
So, 21/72 + 42/14 = 79/24
In mixed form: 37/24

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