Add 72/27 and 21/12, Solve 2 18/27 + 1 9/12 as a fraction

Add 72/27 and 21/12

1^st number: 2 18/27, 2^nd number: 1 9/12

72/27 + 21/12 is 53/12.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 12 is 108

Next, find the equivalent fraction of both fractional numbers with denominator 108
For the 1st fraction, since 27 × 4 = 108,
72/27 = 72 × 4/27 × 4 = 288/108
Likewise, for the 2nd fraction, since 12 × 9 = 108,
21/12 = 21 × 9/12 × 9 = 189/108
Add the two like fractions:
288/108 + 189/108 = 288 + 189/108 = 477/108
477/108 simplified gives 53/12
So, 72/27 + 21/12 = 53/12
In mixed form: 45/12

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