Add 81/72 and 40/10
1st number: 1 9/72, 2nd number: 4 0/10
81/72 + 40/10 is 41/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 10 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
81/72 = 81 × 5/72 × 5 = 405/360 - Likewise, for the 2nd fraction, since 10 × 36 = 360,
40/10 = 40 × 36/10 × 36 = 1440/360 - Add the two like fractions:
405/360 + 1440/360 = 405 + 1440/360 = 1845/360 - 1845/360 simplified gives 41/8
- So, 81/72 + 40/10 = 41/8
In mixed form: 51/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/72+80/10 81/72+40/20 81/72+40/30 81/72+40/50 81/72+40/70