Add 72/18 and 20/24
1st number: 4 0/18, 2nd number: 20/24
72/18 + 20/24 is 29/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
72/18 = 72 × 4/18 × 4 = 288/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
20/24 = 20 × 3/24 × 3 = 60/72 - Add the two like fractions:
288/72 + 60/72 = 288 + 60/72 = 348/72 - 348/72 simplified gives 29/6
- So, 72/18 + 20/24 = 29/6
In mixed form: 45/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/18+40/24 72/36+20/24 72/18+20/48 72/18+60/24 72/54+20/24 72/18+20/72 72/90+20/24