Add 15/4 and 81/72
1st number: 3 3/4, 2nd number: 1 9/72
15/4 + 81/72 is 39/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
15/4 = 15 × 18/4 × 18 = 270/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Add the two like fractions:
270/72 + 81/72 = 270 + 81/72 = 351/72 - 351/72 simplified gives 39/8
- So, 15/4 + 81/72 = 39/8
In mixed form: 47/8
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