Add 15/20 and 12/18
15/20 + 12/18 is 17/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
15/20 = 15 × 9/20 × 9 = 135/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
12/18 = 12 × 10/18 × 10 = 120/180 - Add the two like fractions:
135/180 + 120/180 = 135 + 120/180 = 255/180 - 255/180 simplified gives 17/12
- So, 15/20 + 12/18 = 17/12
In mixed form: 15/12
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