Add 81/72 and 27/18
1st number: 1 9/72, 2nd number: 1 9/18
81/72 + 27/18 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
27/18 = 27 × 4/18 × 4 = 108/72 - Add the two like fractions:
81/72 + 108/72 = 81 + 108/72 = 189/72 - 189/72 simplified gives 21/8
- So, 81/72 + 27/18 = 21/8
In mixed form: 25/8
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