Add 81/5 and 15/7
1st number: 16 1/5, 2nd number: 2 1/7
81/5 + 15/7 is 642/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
81/5 = 81 × 7/5 × 7 = 567/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
15/7 = 15 × 5/7 × 5 = 75/35 - Add the two like fractions:
567/35 + 75/35 = 567 + 75/35 = 642/35 - So, 81/5 + 15/7 = 642/35
In mixed form: 1812/35
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