Add 21/54 and 7/18
21/54 + 7/18 is 7/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 18 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 18 × 3 = 54,
7/18 = 7 × 3/18 × 3 = 21/54 - Add the two like fractions:
21/54 + 21/54 = 21 + 21/54 = 42/54 - 42/54 simplified gives 7/9
- So, 21/54 + 7/18 = 7/9
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