Add 20/28 and 12/9
1st number: 20/28, 2nd number: 1 3/9
20/28 + 12/9 is 43/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
20/28 = 20 × 9/28 × 9 = 180/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
12/9 = 12 × 28/9 × 28 = 336/252 - Add the two like fractions:
180/252 + 336/252 = 180 + 336/252 = 516/252 - 516/252 simplified gives 43/21
- So, 20/28 + 12/9 = 43/21
In mixed form: 21/21
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