Add 21/14 and 15/54
1st number: 1 7/14, 2nd number: 15/54
21/14 + 15/54 is 16/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 14 × 27 = 378,
21/14 = 21 × 27/14 × 27 = 567/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
15/54 = 15 × 7/54 × 7 = 105/378 - Add the two like fractions:
567/378 + 105/378 = 567 + 105/378 = 672/378 - 672/378 simplified gives 16/9
- So, 21/14 + 15/54 = 16/9
In mixed form: 17/9
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