Add 75/84 and 27/80
75/84 + 27/80 is 689/560.
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,
75/84 = 75 × 20/84 × 20 = 1500/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
27/80 = 27 × 21/80 × 21 = 567/1680 - Add the two like fractions:
1500/1680 + 567/1680 = 1500 + 567/1680 = 2067/1680 - 2067/1680 simplified gives 689/560
- So, 75/84 + 27/80 = 689/560
In mixed form: 1129/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/84+54/80 75/84+81/80