Add 80/72 and 60/45
1st number: 1 8/72, 2nd number: 1 15/45
80/72 + 60/45 is 22/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
80/72 = 80 × 5/72 × 5 = 400/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
60/45 = 60 × 8/45 × 8 = 480/360 - Add the two like fractions:
400/360 + 480/360 = 400 + 480/360 = 880/360 - 880/360 simplified gives 22/9
- So, 80/72 + 60/45 = 22/9
In mixed form: 24/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/72+60/90