Add 21/18 and 2/5
1st number: 1 3/18, 2nd number: 2/5
21/18 + 2/5 is 47/30.
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,
2/5 = 2 × 18/5 × 18 = 36/90 - Add the two like fractions:
105/90 + 36/90 = 105 + 36/90 = 141/90 - 141/90 simplified gives 47/30
- So, 21/18 + 2/5 = 47/30
In mixed form: 117/30
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