Add 21/27 and 9/80
21/27 + 9/80 is 641/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 80 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 27 × 80 = 2160,
21/27 = 21 × 80/27 × 80 = 1680/2160 - Likewise, for the 2nd fraction, since 80 × 27 = 2160,
9/80 = 9 × 27/80 × 27 = 243/2160 - Add the two like fractions:
1680/2160 + 243/2160 = 1680 + 243/2160 = 1923/2160 - 1923/2160 simplified gives 641/720
- So, 21/27 + 9/80 = 641/720
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