Add 20/27 and 18/40
20/27 + 18/40 is 643/540.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 27 × 40 = 1080,
20/27 = 20 × 40/27 × 40 = 800/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
18/40 = 18 × 27/40 × 27 = 486/1080 - Add the two like fractions:
800/1080 + 486/1080 = 800 + 486/1080 = 1286/1080 - 1286/1080 simplified gives 643/540
- So, 20/27 + 18/40 = 643/540
In mixed form: 1103/540
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