Add 72/24 and 18/90
1st number: 3 0/24, 2nd number: 18/90
72/24 + 18/90 is 16/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
72/24 = 72 × 15/24 × 15 = 1080/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
18/90 = 18 × 4/90 × 4 = 72/360 - Add the two like fractions:
1080/360 + 72/360 = 1080 + 72/360 = 1152/360 - 1152/360 simplified gives 16/5
- So, 72/24 + 18/90 = 16/5
In mixed form: 31/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/24+36/90 72/48+18/90 72/24+54/90