Add 72/15 and 81/36
1st number: 4 12/15, 2nd number: 2 9/36
72/15 + 81/36 is 141/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 15 × 12 = 180,
72/15 = 72 × 12/15 × 12 = 864/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
81/36 = 81 × 5/36 × 5 = 405/180 - Add the two like fractions:
864/180 + 405/180 = 864 + 405/180 = 1269/180 - 1269/180 simplified gives 141/20
- So, 72/15 + 81/36 = 141/20
In mixed form: 71/20
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