Add 21/18 and 3/5
1st number: 1 3/18, 2nd number: 3/5
21/18 + 3/5 is 53/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 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 5 × 18 = 90,
3/5 = 3 × 18/5 × 18 = 54/90 - Add the two like fractions:
105/90 + 54/90 = 105 + 54/90 = 159/90 - 159/90 simplified gives 53/30
- So, 21/18 + 3/5 = 53/30
In mixed form: 123/30
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