Add 9/90 and 72/45
1st number: 9/90, 2nd number: 1 27/45
9/90 + 72/45 is 17/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
9/90 = 9 × 1/90 × 1 = 9/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
72/45 = 72 × 2/45 × 2 = 144/90 - Add the two like fractions:
9/90 + 144/90 = 9 + 144/90 = 153/90 - 153/90 simplified gives 17/10
- So, 9/90 + 72/45 = 17/10
In mixed form: 17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/90+72/45 9/90+72/90 27/90+72/45 45/90+72/45 63/90+72/45