Add 9/5 and 72/90
1st number: 1 4/5, 2nd number: 72/90
9/5 + 72/90 is 13/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
9/5 = 9 × 18/5 × 18 = 162/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
72/90 = 72 × 1/90 × 1 = 72/90 - Add the two like fractions:
162/90 + 72/90 = 162 + 72/90 = 234/90 - 234/90 simplified gives 13/5
- So, 9/5 + 72/90 = 13/5
In mixed form: 23/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/5+72/90 9/10+72/90 27/5+72/90 9/15+72/90 45/5+72/90 9/25+72/90 63/5+72/90 9/35+72/90