Add 28/15 and 72/84
1st number: 1 13/15, 2nd number: 72/84
28/15 + 72/84 is 286/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
28/15 = 28 × 28/15 × 28 = 784/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
72/84 = 72 × 5/84 × 5 = 360/420 - Add the two like fractions:
784/420 + 360/420 = 784 + 360/420 = 1144/420 - 1144/420 simplified gives 286/105
- So, 28/15 + 72/84 = 286/105
In mixed form: 276/105
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