Add 28/21 and 20/28
1st number: 1 7/21, 2nd number: 20/28
28/21 + 20/28 is 43/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
28/21 = 28 × 4/21 × 4 = 112/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
20/28 = 20 × 3/28 × 3 = 60/84 - Add the two like fractions:
112/84 + 60/84 = 112 + 60/84 = 172/84 - 172/84 simplified gives 43/21
- So, 28/21 + 20/28 = 43/21
In mixed form: 21/21
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