Add 15/4 and 81/7
1st number: 3 3/4, 2nd number: 11 4/7
15/4 + 81/7 is 429/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
15/4 = 15 × 7/4 × 7 = 105/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
81/7 = 81 × 4/7 × 4 = 324/28 - Add the two like fractions:
105/28 + 324/28 = 105 + 324/28 = 429/28 - So, 15/4 + 81/7 = 429/28
In mixed form: 159/28
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