Add 2/3 and 1/21
2/3 + 1/21 is 5/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
2/3 = 2 × 7/3 × 7 = 14/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
1/21 = 1 × 1/21 × 1 = 1/21 - Add the two like fractions:
14/21 + 1/21 = 14 + 1/21 = 15/21 - 15/21 simplified gives 5/7
- So, 2/3 + 1/21 = 5/7
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