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