Add 20/21 and 54/80
20/21 + 54/80 is 1367/840.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
20/21 = 20 × 80/21 × 80 = 1600/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
54/80 = 54 × 21/80 × 21 = 1134/1680 - Add the two like fractions:
1600/1680 + 1134/1680 = 1600 + 1134/1680 = 2734/1680 - 2734/1680 simplified gives 1367/840
- So, 20/21 + 54/80 = 1367/840
In mixed form: 1527/840
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