Add 10/40 and 72/9
1st number: 10/40, 2nd number: 8 0/9
10/40 + 72/9 is 33/4.
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,
10/40 = 10 × 9/40 × 9 = 90/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
72/9 = 72 × 40/9 × 40 = 2880/360 - Add the two like fractions:
90/360 + 2880/360 = 90 + 2880/360 = 2970/360 - 2970/360 simplified gives 33/4
- So, 10/40 + 72/9 = 33/4
In mixed form: 81/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+72/9 10/80+72/9 10/40+72/18 30/40+72/9 10/40+72/27 50/40+72/9 10/40+72/45 70/40+72/9 10/40+72/63