Add 18/9 and 90/8
1st number: 2 0/9, 2nd number: 11 2/8
18/9 + 90/8 is 53/4.
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,
18/9 = 18 × 8/9 × 8 = 144/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
90/8 = 90 × 9/8 × 9 = 810/72 - Add the two like fractions:
144/72 + 810/72 = 144 + 810/72 = 954/72 - 954/72 simplified gives 53/4
- So, 18/9 + 90/8 = 53/4
In mixed form: 131/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+90/8 18/9+90/16 54/9+90/8 18/27+90/8 18/9+90/24 90/9+90/8 18/45+90/8 18/9+90/40 18/63+90/8 18/9+90/56