Add 21/27 and 27/8, Solve 21/27 + 3 3/8 as a fraction

Add 21/27 and 27/8

1^st number: 21/27, 2^nd number: 3 3/8

21/27 + 27/8 is 299/72.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 8 is 216

Next, find the equivalent fraction of both fractional numbers with denominator 216
For the 1st fraction, since 27 × 8 = 216,
21/27 = 21 × 8/27 × 8 = 168/216
Likewise, for the 2nd fraction, since 8 × 27 = 216,
27/8 = 27 × 27/8 × 27 = 729/216
Add the two like fractions:
168/216 + 729/216 = 168 + 729/216 = 897/216
897/216 simplified gives 299/72
So, 21/27 + 27/8 = 299/72
In mixed form: 411/72

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