Add 15/8 and 10/21
1st number: 1 7/8, 2nd number: 10/21
15/8 + 10/21 is 395/168.
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,
15/8 = 15 × 21/8 × 21 = 315/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
10/21 = 10 × 8/21 × 8 = 80/168 - Add the two like fractions:
315/168 + 80/168 = 315 + 80/168 = 395/168 - So, 15/8 + 10/21 = 395/168
In mixed form: 259/168
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