Add 21/27 and 20/35
21/27 + 20/35 is 85/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 35 is 945
Next, find the equivalent fraction of both fractional numbers with denominator 945 - For the 1st fraction, since 27 × 35 = 945,
21/27 = 21 × 35/27 × 35 = 735/945 - Likewise, for the 2nd fraction, since 35 × 27 = 945,
20/35 = 20 × 27/35 × 27 = 540/945 - Add the two like fractions:
735/945 + 540/945 = 735 + 540/945 = 1275/945 - 1275/945 simplified gives 85/63
- So, 21/27 + 20/35 = 85/63
In mixed form: 122/63
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