Add 20/18 and 30/15
1st number: 1 2/18, 2nd number: 2 0/15
20/18 + 30/15 is 28/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
20/18 = 20 × 5/18 × 5 = 100/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
30/15 = 30 × 6/15 × 6 = 180/90 - Add the two like fractions:
100/90 + 180/90 = 100 + 180/90 = 280/90 - 280/90 simplified gives 28/9
- So, 20/18 + 30/15 = 28/9
In mixed form: 31/9
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