Add 64/21 and 5/15
1st number: 3 1/21, 2nd number: 5/15
64/21 + 5/15 is 71/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 15 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
64/21 = 64 × 5/21 × 5 = 320/105 - Likewise, for the 2nd fraction, since 15 × 7 = 105,
5/15 = 5 × 7/15 × 7 = 35/105 - Add the two like fractions:
320/105 + 35/105 = 320 + 35/105 = 355/105 - 355/105 simplified gives 71/21
- So, 64/21 + 5/15 = 71/21
In mixed form: 38/21
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