Add 20/15 and 56/18
1st number: 1 5/15, 2nd number: 3 2/18
20/15 + 56/18 is 40/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
20/15 = 20 × 6/15 × 6 = 120/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
56/18 = 56 × 5/18 × 5 = 280/90 - Add the two like fractions:
120/90 + 280/90 = 120 + 280/90 = 400/90 - 400/90 simplified gives 40/9
- So, 20/15 + 56/18 = 40/9
In mixed form: 44/9
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