Add 90/9 and 90/8
1st number: 10 0/9, 2nd number: 11 2/8
90/9 + 90/8 is 85/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
90/9 = 90 × 8/9 × 8 = 720/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
90/8 = 90 × 9/8 × 9 = 810/72 - Add the two like fractions:
720/72 + 810/72 = 720 + 810/72 = 1530/72 - 1530/72 simplified gives 85/4
- So, 90/9 + 90/8 = 85/4
In mixed form: 211/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18+90/8 90/9+90/16 90/27+90/8 90/9+90/24 90/45+90/8 90/9+90/40 90/63+90/8 90/9+90/56