Add 20/28 and 21/27
20/28 + 21/27 is 94/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
20/28 = 20 × 27/28 × 27 = 540/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
21/27 = 21 × 28/27 × 28 = 588/756 - Add the two like fractions:
540/756 + 588/756 = 540 + 588/756 = 1128/756 - 1128/756 simplified gives 94/63
- So, 20/28 + 21/27 = 94/63
In mixed form: 131/63
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