Add 28/15 and 72/7
1st number: 1 13/15, 2nd number: 10 2/7
28/15 + 72/7 is 1276/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
28/15 = 28 × 7/15 × 7 = 196/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
72/7 = 72 × 15/7 × 15 = 1080/105 - Add the two like fractions:
196/105 + 1080/105 = 196 + 1080/105 = 1276/105 - So, 28/15 + 72/7 = 1276/105
In mixed form: 1216/105
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