Add 12/15 and 3/12
12/15 + 3/12 is 21/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
12/15 = 12 × 4/15 × 4 = 48/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
3/12 = 3 × 5/12 × 5 = 15/60 - Add the two like fractions:
48/60 + 15/60 = 48 + 15/60 = 63/60 - 63/60 simplified gives 21/20
- So, 12/15 + 3/12 = 21/20
In mixed form: 11/20
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