Add 28/27 and 21/72, Solve 1 1/27 + 21/72 as a fraction

Add 28/27 and 21/72

1^st number: 1 1/27, 2^nd number: 21/72

28/27 + 21/72 is 287/216.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 72 is 216

Next, find the equivalent fraction of both fractional numbers with denominator 216
For the 1st fraction, since 27 × 8 = 216,
28/27 = 28 × 8/27 × 8 = 224/216
Likewise, for the 2nd fraction, since 72 × 3 = 216,
21/72 = 21 × 3/72 × 3 = 63/216
Add the two like fractions:
224/216 + 63/216 = 224 + 63/216 = 287/216
So, 28/27 + 21/72 = 287/216
In mixed form: 171/216

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