Add 15/12 and 81/72
1st number: 1 3/12, 2nd number: 1 9/72
15/12 + 81/72 is 19/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
15/12 = 15 × 6/12 × 6 = 90/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Add the two like fractions:
90/72 + 81/72 = 90 + 81/72 = 171/72 - 171/72 simplified gives 19/8
- So, 15/12 + 81/72 = 19/8
In mixed form: 23/8
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