Add 21/18 and 18/54
1st number: 1 3/18, 2nd number: 18/54
21/18 + 18/54 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
21/18 = 21 × 3/18 × 3 = 63/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
18/54 = 18 × 1/54 × 1 = 18/54 - Add the two like fractions:
63/54 + 18/54 = 63 + 18/54 = 81/54 - 81/54 simplified gives 3/2
- So, 21/18 + 18/54 = 3/2
In mixed form: 11/2
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