Add 9/18 and 90/9
1st number: 9/18, 2nd number: 10 0/9
9/18 + 90/9 is 21/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
9/18 = 9 × 1/18 × 1 = 9/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
90/9 = 90 × 2/9 × 2 = 180/18 - Add the two like fractions:
9/18 + 180/18 = 9 + 180/18 = 189/18 - 189/18 simplified gives 21/2
- So, 9/18 + 90/9 = 21/2
In mixed form: 101/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/36+90/9 9/18+90/18 27/18+90/9 9/54+90/9 9/18+90/27 45/18+90/9 9/90+90/9 9/18+90/45 63/18+90/9 9/18+90/63