Add 15/35 and 21/12
1st number: 15/35, 2nd number: 1 9/12
15/35 + 21/12 is 61/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
15/35 = 15 × 12/35 × 12 = 180/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
21/12 = 21 × 35/12 × 35 = 735/420 - Add the two like fractions:
180/420 + 735/420 = 180 + 735/420 = 915/420 - 915/420 simplified gives 61/28
- So, 15/35 + 21/12 = 61/28
In mixed form: 25/28
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