Add 45/80 and 27/72
45/80 + 27/72 is 15/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
45/80 = 45 × 9/80 × 9 = 405/720 - Likewise, for the 2nd fraction, since 72 × 10 = 720,
27/72 = 27 × 10/72 × 10 = 270/720 - Add the two like fractions:
405/720 + 270/720 = 405 + 270/720 = 675/720 - 675/720 simplified gives 15/16
- So, 45/80 + 27/72 = 15/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+27/72 45/80+54/72 45/80+81/72