Add 72/18 and 27/40
1st number: 4 0/18, 2nd number: 27/40
72/18 + 27/40 is 187/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
72/18 = 72 × 20/18 × 20 = 1440/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
27/40 = 27 × 9/40 × 9 = 243/360 - Add the two like fractions:
1440/360 + 243/360 = 1440 + 243/360 = 1683/360 - 1683/360 simplified gives 187/40
- So, 72/18 + 27/40 = 187/40
In mixed form: 427/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/18+54/40 72/36+27/40 72/18+27/80 72/18+81/40 72/54+27/40 72/90+27/40