Add 21/3 and 9/18
1st number: 7 0/3, 2nd number: 9/18
21/3 + 9/18 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 3 × 6 = 18,
21/3 = 21 × 6/3 × 6 = 126/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
9/18 = 9 × 1/18 × 1 = 9/18 - Add the two like fractions:
126/18 + 9/18 = 126 + 9/18 = 135/18 - 135/18 simplified gives 15/2
- So, 21/3 + 9/18 = 15/2
In mixed form: 71/2
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