Add 27/84 and 20/15
1st number: 27/84, 2nd number: 1 5/15
27/84 + 20/15 is 139/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
27/84 = 27 × 5/84 × 5 = 135/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
20/15 = 20 × 28/15 × 28 = 560/420 - Add the two like fractions:
135/420 + 560/420 = 135 + 560/420 = 695/420 - 695/420 simplified gives 139/84
- So, 27/84 + 20/15 = 139/84
In mixed form: 155/84
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