Add 21/42 and 9/14
21/42 + 9/14 is 8/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
9/14 = 9 × 3/14 × 3 = 27/42 - Add the two like fractions:
21/42 + 27/42 = 21 + 27/42 = 48/42 - 48/42 simplified gives 8/7
- So, 21/42 + 9/14 = 8/7
In mixed form: 11/7
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