Add 16/15 and 28/21
1st number: 1 1/15, 2nd number: 1 7/21
16/15 + 28/21 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
16/15 = 16 × 7/15 × 7 = 112/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
28/21 = 28 × 5/21 × 5 = 140/105 - Add the two like fractions:
112/105 + 140/105 = 112 + 140/105 = 252/105 - 252/105 simplified gives 12/5
- So, 16/15 + 28/21 = 12/5
In mixed form: 22/5
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