Add 21/18 and 20/10
1st number: 1 3/18, 2nd number: 2 0/10
21/18 + 20/10 is 19/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
20/10 = 20 × 9/10 × 9 = 180/90 - Add the two like fractions:
105/90 + 180/90 = 105 + 180/90 = 285/90 - 285/90 simplified gives 19/6
- So, 21/18 + 20/10 = 19/6
In mixed form: 31/6
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