Add 72/9 and 40/8
1st number: 8 0/9, 2nd number: 5 0/8
72/9 + 40/8 is 13/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
72/9 = 72 × 8/9 × 8 = 576/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
40/8 = 40 × 9/8 × 9 = 360/72 - Add the two like fractions:
576/72 + 360/72 = 576 + 360/72 = 936/72 - 936/72 simplified gives 13/1
- So, 72/9 + 40/8 = 13/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/9+80/8 72/18+40/8 72/9+40/16 72/27+40/8 72/9+40/24 72/45+40/8 72/63+40/8 72/9+40/56