Add 9/90 and 72/20
1st number: 9/90, 2nd number: 3 12/20
9/90 + 72/20 is 37/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
9/90 = 9 × 2/90 × 2 = 18/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
72/20 = 72 × 9/20 × 9 = 648/180 - Add the two like fractions:
18/180 + 648/180 = 18 + 648/180 = 666/180 - 666/180 simplified gives 37/10
- So, 9/90 + 72/20 = 37/10
In mixed form: 37/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/90+72/20 9/90+72/40 27/90+72/20 9/90+72/60 45/90+72/20 63/90+72/20