Add 21/42 and 4/7
21/42 + 4/7 is 15/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 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 7 × 6 = 42,
4/7 = 4 × 6/7 × 6 = 24/42 - Add the two like fractions:
21/42 + 24/42 = 21 + 24/42 = 45/42 - 45/42 simplified gives 15/14
- So, 21/42 + 4/7 = 15/14
In mixed form: 11/14
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