Add 72/36 and 10/20
1st number: 2 0/36, 2nd number: 10/20
72/36 + 10/20 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
72/36 = 72 × 5/36 × 5 = 360/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
10/20 = 10 × 9/20 × 9 = 90/180 - Add the two like fractions:
360/180 + 90/180 = 360 + 90/180 = 450/180 - 450/180 simplified gives 5/2
- So, 72/36 + 10/20 = 5/2
In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/36+10/40 72/36+30/20 72/36+10/60 72/36+50/20 72/36+70/20