Add 20/21 and 27/63
20/21 + 27/63 is 29/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
20/21 = 20 × 3/21 × 3 = 60/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
27/63 = 27 × 1/63 × 1 = 27/63 - Add the two like fractions:
60/63 + 27/63 = 60 + 27/63 = 87/63 - 87/63 simplified gives 29/21
- So, 20/21 + 27/63 = 29/21
In mixed form: 18/21
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