Add 12/21 and 35/15
1st number: 12/21, 2nd number: 2 5/15
12/21 + 35/15 is 61/21.
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,
12/21 = 12 × 5/21 × 5 = 60/105 - Likewise, for the 2nd fraction, since 15 × 7 = 105,
35/15 = 35 × 7/15 × 7 = 245/105 - Add the two like fractions:
60/105 + 245/105 = 60 + 245/105 = 305/105 - 305/105 simplified gives 61/21
- So, 12/21 + 35/15 = 61/21
In mixed form: 219/21
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