Add 72/40 and 6/80
1st number: 1 32/40, 2nd number: 6/80
72/40 + 6/80 is 15/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
72/40 = 72 × 2/40 × 2 = 144/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
6/80 = 6 × 1/80 × 1 = 6/80 - Add the two like fractions:
144/80 + 6/80 = 144 + 6/80 = 150/80 - 150/80 simplified gives 15/8
- So, 72/40 + 6/80 = 15/8
In mixed form: 17/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40+12/80 72/80+6/80 72/40+18/80 72/40+30/80 72/40+42/80