Add 72/18 and 9/12
1st number: 4 0/18, 2nd number: 9/12
72/18 + 9/12 is 19/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
72/18 = 72 × 2/18 × 2 = 144/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
9/12 = 9 × 3/12 × 3 = 27/36 - Add the two like fractions:
144/36 + 27/36 = 144 + 27/36 = 171/36 - 171/36 simplified gives 19/4
- So, 72/18 + 9/12 = 19/4
In mixed form: 43/4
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