Add 21/14 and 12/9
1st number: 1 7/14, 2nd number: 1 3/9
21/14 + 12/9 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 14 × 9 = 126,
21/14 = 21 × 9/14 × 9 = 189/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
12/9 = 12 × 14/9 × 14 = 168/126 - Add the two like fractions:
189/126 + 168/126 = 189 + 168/126 = 357/126 - 357/126 simplified gives 17/6
- So, 21/14 + 12/9 = 17/6
In mixed form: 25/6
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