Add 72/40 and 2/9
1st number: 1 32/40, 2nd number: 2/9
72/40 + 2/9 is 91/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
72/40 = 72 × 9/40 × 9 = 648/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
2/9 = 2 × 40/9 × 40 = 80/360 - Add the two like fractions:
648/360 + 80/360 = 648 + 80/360 = 728/360 - 728/360 simplified gives 91/45
- So, 72/40 + 2/9 = 91/45
In mixed form: 21/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40+4/9 72/80+2/9 72/40+2/18 72/40+6/9 72/40+2/27 72/40+10/9 72/40+2/45 72/40+14/9 72/40+2/63