Add 81/8 and 70/21
1st number: 10 1/8, 2nd number: 3 7/21
81/8 + 70/21 is 323/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
81/8 = 81 × 21/8 × 21 = 1701/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
70/21 = 70 × 8/21 × 8 = 560/168 - Add the two like fractions:
1701/168 + 560/168 = 1701 + 560/168 = 2261/168 - 2261/168 simplified gives 323/24
- So, 81/8 + 70/21 = 323/24
In mixed form: 1311/24
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