Add 21/5 and 1/18
1st number: 4 1/5, 2nd number: 1/18
21/5 + 1/18 is 383/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
21/5 = 21 × 18/5 × 18 = 378/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
1/18 = 1 × 5/18 × 5 = 5/90 - Add the two like fractions:
378/90 + 5/90 = 378 + 5/90 = 383/90 - So, 21/5 + 1/18 = 383/90
In mixed form: 423/90
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