Add 2/42 and 27/80
2/42 + 27/80 is 647/1680.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
2/42 = 2 × 40/42 × 40 = 80/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
27/80 = 27 × 21/80 × 21 = 567/1680 - Add the two like fractions:
80/1680 + 567/1680 = 80 + 567/1680 = 647/1680 - So, 2/42 + 27/80 = 647/1680
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/42+27/80 2/42+54/80 2/84+27/80 6/42+27/80 2/42+81/80 10/42+27/80 14/42+27/80