Add 21/72 and 28/16, Solve 21/72 + 1 12/16 as a fraction

Add 21/72 and 28/16

1^st number: 21/72, 2^nd number: 1 12/16

21/72 + 28/16 is 49/24.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 16 is 144

Next, find the equivalent fraction of both fractional numbers with denominator 144
For the 1st fraction, since 72 × 2 = 144,
21/72 = 21 × 2/72 × 2 = 42/144
Likewise, for the 2nd fraction, since 16 × 9 = 144,
28/16 = 28 × 9/16 × 9 = 252/144
Add the two like fractions:
42/144 + 252/144 = 42 + 252/144 = 294/144
294/144 simplified gives 49/24
So, 21/72 + 28/16 = 49/24
In mixed form: 21/24

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