Add 1/72 and 18/80
1/72 + 18/80 is 43/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 72 × 10 = 720,
1/72 = 1 × 10/72 × 10 = 10/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
18/80 = 18 × 9/80 × 9 = 162/720 - Add the two like fractions:
10/720 + 162/720 = 10 + 162/720 = 172/720 - 172/720 simplified gives 43/180
- So, 1/72 + 18/80 = 43/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/72+18/80 1/72+36/80 3/72+18/80 1/72+54/80 5/72+18/80 1/72+90/80 7/72+18/80