Add 12/18 and 21/54
12/18 + 21/54 is 19/18.
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,
12/18 = 12 × 3/18 × 3 = 36/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Add the two like fractions:
36/54 + 21/54 = 36 + 21/54 = 57/54 - 57/54 simplified gives 19/18
- So, 12/18 + 21/54 = 19/18
In mixed form: 11/18
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