Add 72/80 and 3/4
72/80 + 3/4 is 33/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 4 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
72/80 = 72 × 1/80 × 1 = 72/80 - Likewise, for the 2nd fraction, since 4 × 20 = 80,
3/4 = 3 × 20/4 × 20 = 60/80 - Add the two like fractions:
72/80 + 60/80 = 72 + 60/80 = 132/80 - 132/80 simplified gives 33/20
- So, 72/80 + 3/4 = 33/20
In mixed form: 113/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/80+6/4 72/80+3/8 72/80+9/4 72/80+3/12 72/80+15/4 72/80+3/20 72/80+21/4 72/80+3/28