Add 20/28 and 28/42
20/28 + 28/42 is 29/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
20/28 = 20 × 3/28 × 3 = 60/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
28/42 = 28 × 2/42 × 2 = 56/84 - Add the two like fractions:
60/84 + 56/84 = 60 + 56/84 = 116/84 - 116/84 simplified gives 29/21
- So, 20/28 + 28/42 = 29/21
In mixed form: 18/21
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