Add 15/18 and 25/20
1st number: 15/18, 2nd number: 1 5/20
15/18 + 25/20 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
15/18 = 15 × 10/18 × 10 = 150/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
25/20 = 25 × 9/20 × 9 = 225/180 - Add the two like fractions:
150/180 + 225/180 = 150 + 225/180 = 375/180 - 375/180 simplified gives 25/12
- So, 15/18 + 25/20 = 25/12
In mixed form: 21/12
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