Add 28/84 and 21/18
1st number: 28/84, 2nd number: 1 3/18
28/84 + 21/18 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
28/84 = 28 × 3/84 × 3 = 84/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
21/18 = 21 × 14/18 × 14 = 294/252 - Add the two like fractions:
84/252 + 294/252 = 84 + 294/252 = 378/252 - 378/252 simplified gives 3/2
- So, 28/84 + 21/18 = 3/2
In mixed form: 11/2
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