Add 9/40 and 72/9
1st number: 9/40, 2nd number: 8 0/9
9/40 + 72/9 is 329/40.
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,
9/40 = 9 × 9/40 × 9 = 81/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
72/9 = 72 × 40/9 × 40 = 2880/360 - Add the two like fractions:
81/360 + 2880/360 = 81 + 2880/360 = 2961/360 - 2961/360 simplified gives 329/40
- So, 9/40 + 72/9 = 329/40
In mixed form: 89/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40+72/9 9/80+72/9 9/40+72/18 27/40+72/9 9/40+72/27 45/40+72/9 9/40+72/45 63/40+72/9 9/40+72/63