Add 72/18 and 15/54
1st number: 4 0/18, 2nd number: 15/54
72/18 + 15/54 is 77/18.
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,
72/18 = 72 × 3/18 × 3 = 216/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
15/54 = 15 × 1/54 × 1 = 15/54 - Add the two like fractions:
216/54 + 15/54 = 216 + 15/54 = 231/54 - 231/54 simplified gives 77/18
- So, 72/18 + 15/54 = 77/18
In mixed form: 45/18
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