Add 21/12 and 18/16
1st number: 1 9/12, 2nd number: 1 2/16
21/12 + 18/16 is 23/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 16 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 12 × 4 = 48,
21/12 = 21 × 4/12 × 4 = 84/48 - Likewise, for the 2nd fraction, since 16 × 3 = 48,
18/16 = 18 × 3/16 × 3 = 54/48 - Add the two like fractions:
84/48 + 54/48 = 84 + 54/48 = 138/48 - 138/48 simplified gives 23/8
- So, 21/12 + 18/16 = 23/8
In mixed form: 27/8
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