Add 15/20 and 9/18
15/20 + 9/18 is 5/4.
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,
9/18 = 9 × 10/18 × 10 = 90/180 - Add the two like fractions:
135/180 + 90/180 = 135 + 90/180 = 225/180 - 225/180 simplified gives 5/4
- So, 15/20 + 9/18 = 5/4
In mixed form: 11/4
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