Add 4/84 and 20/15
1st number: 4/84, 2nd number: 1 5/15
4/84 + 20/15 is 29/21.
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,
4/84 = 4 × 5/84 × 5 = 20/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
20/15 = 20 × 28/15 × 28 = 560/420 - Add the two like fractions:
20/420 + 560/420 = 20 + 560/420 = 580/420 - 580/420 simplified gives 29/21
- So, 4/84 + 20/15 = 29/21
In mixed form: 18/21
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