Add 80/60 and 84/72
1st number: 1 20/60, 2nd number: 1 12/72
80/60 + 84/72 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 60 × 6 = 360,
80/60 = 80 × 6/60 × 6 = 480/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
84/72 = 84 × 5/72 × 5 = 420/360 - Add the two like fractions:
480/360 + 420/360 = 480 + 420/360 = 900/360 - 900/360 simplified gives 5/2
- So, 80/60 + 84/72 = 5/2
In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: