Add 21/5 and 20/18
1st number: 4 1/5, 2nd number: 1 2/18
21/5 + 20/18 is 239/45.
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,
20/18 = 20 × 5/18 × 5 = 100/90 - Add the two like fractions:
378/90 + 100/90 = 378 + 100/90 = 478/90 - 478/90 simplified gives 239/45
- So, 21/5 + 20/18 = 239/45
In mixed form: 514/45
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