Add 21/84 and 27/80
21/84 + 27/80 is 47/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
21/84 = 21 × 20/84 × 20 = 420/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
27/80 = 27 × 21/80 × 21 = 567/1680 - Add the two like fractions:
420/1680 + 567/1680 = 420 + 567/1680 = 987/1680 - 987/1680 simplified gives 47/80
- So, 21/84 + 27/80 = 47/80
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