Add 21/14 and 15/42
1st number: 1 7/14, 2nd number: 15/42
21/14 + 15/42 is 13/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
21/14 = 21 × 3/14 × 3 = 63/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
15/42 = 15 × 1/42 × 1 = 15/42 - Add the two like fractions:
63/42 + 15/42 = 63 + 15/42 = 78/42 - 78/42 simplified gives 13/7
- So, 21/14 + 15/42 = 13/7
In mixed form: 16/7
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