Add 12/15 and 9/20
12/15 + 9/20 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 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 20 × 3 = 60,
9/20 = 9 × 3/20 × 3 = 27/60 - Add the two like fractions:
48/60 + 27/60 = 48 + 27/60 = 75/60 - 75/60 simplified gives 5/4
- So, 12/15 + 9/20 = 5/4
In mixed form: 11/4
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