Add 15/21 and 5/6
15/21 + 5/6 is 65/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
15/21 = 15 × 2/21 × 2 = 30/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
5/6 = 5 × 7/6 × 7 = 35/42 - Add the two like fractions:
30/42 + 35/42 = 30 + 35/42 = 65/42 - So, 15/21 + 5/6 = 65/42
In mixed form: 123/42
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