Add 72/4 and 28/80
1st number: 18 0/4, 2nd number: 28/80
72/4 + 28/80 is 367/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
72/4 = 72 × 20/4 × 20 = 1440/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
28/80 = 28 × 1/80 × 1 = 28/80 - Add the two like fractions:
1440/80 + 28/80 = 1440 + 28/80 = 1468/80 - 1468/80 simplified gives 367/20
- So, 72/4 + 28/80 = 367/20
In mixed form: 187/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/4+56/80 72/8+28/80 72/4+84/80 72/12+28/80 72/20+28/80 72/28+28/80