Add 21/56 and 81/10
1st number: 21/56, 2nd number: 8 1/10
21/56 + 81/10 is 339/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 10 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Likewise, for the 2nd fraction, since 10 × 28 = 280,
81/10 = 81 × 28/10 × 28 = 2268/280 - Add the two like fractions:
105/280 + 2268/280 = 105 + 2268/280 = 2373/280 - 2373/280 simplified gives 339/40
- So, 21/56 + 81/10 = 339/40
In mixed form: 819/40
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