Add 5/21 and 18/4
1st number: 5/21, 2nd number: 4 2/4
5/21 + 18/4 is 199/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
5/21 = 5 × 4/21 × 4 = 20/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
18/4 = 18 × 21/4 × 21 = 378/84 - Add the two like fractions:
20/84 + 378/84 = 20 + 378/84 = 398/84 - 398/84 simplified gives 199/42
- So, 5/21 + 18/4 = 199/42
In mixed form: 431/42
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