Add 21/28 and 20/56
21/28 + 20/56 is 31/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
21/28 = 21 × 2/28 × 2 = 42/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
20/56 = 20 × 1/56 × 1 = 20/56 - Add the two like fractions:
42/56 + 20/56 = 42 + 20/56 = 62/56 - 62/56 simplified gives 31/28
- So, 21/28 + 20/56 = 31/28
In mixed form: 13/28
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