Add 28/12 and 20/7
1st number: 2 4/12, 2nd number: 2 6/7
28/12 + 20/7 is 109/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
28/12 = 28 × 7/12 × 7 = 196/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
20/7 = 20 × 12/7 × 12 = 240/84 - Add the two like fractions:
196/84 + 240/84 = 196 + 240/84 = 436/84 - 436/84 simplified gives 109/21
- So, 28/12 + 20/7 = 109/21
In mixed form: 54/21
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