Add 72/9 and 21/18
1st number: 8 0/9, 2nd number: 1 3/18
72/9 + 21/18 is 55/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
72/9 = 72 × 2/9 × 2 = 144/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
21/18 = 21 × 1/18 × 1 = 21/18 - Add the two like fractions:
144/18 + 21/18 = 144 + 21/18 = 165/18 - 165/18 simplified gives 55/6
- So, 72/9 + 21/18 = 55/6
In mixed form: 91/6
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