Add 21/54 and 3/9
21/54 + 3/9 is 13/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 9 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Likewise, for the 2nd fraction, since 9 × 6 = 54,
3/9 = 3 × 6/9 × 6 = 18/54 - Add the two like fractions:
21/54 + 18/54 = 21 + 18/54 = 39/54 - 39/54 simplified gives 13/18
- So, 21/54 + 3/9 = 13/18
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