Add 72/18 and 21/6
1st number: 4 0/18, 2nd number: 3 3/6
72/18 + 21/6 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 6 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
72/18 = 72 × 1/18 × 1 = 72/18 - Likewise, for the 2nd fraction, since 6 × 3 = 18,
21/6 = 21 × 3/6 × 3 = 63/18 - Add the two like fractions:
72/18 + 63/18 = 72 + 63/18 = 135/18 - 135/18 simplified gives 15/2
- So, 72/18 + 21/6 = 15/2
In mixed form: 71/2
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