Add 18/4 and 21/84
1st number: 4 2/4, 2nd number: 21/84
18/4 + 21/84 is 19/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
18/4 = 18 × 21/4 × 21 = 378/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Add the two like fractions:
378/84 + 21/84 = 378 + 21/84 = 399/84 - 399/84 simplified gives 19/4
- So, 18/4 + 21/84 = 19/4
In mixed form: 43/4
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