Add 90/8 and 28/18
1st number: 11 2/8, 2nd number: 1 10/18
90/8 + 28/18 is 461/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
90/8 = 90 × 9/8 × 9 = 810/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
28/18 = 28 × 4/18 × 4 = 112/72 - Add the two like fractions:
810/72 + 112/72 = 810 + 112/72 = 922/72 - 922/72 simplified gives 461/36
- So, 90/8 + 28/18 = 461/36
In mixed form: 1229/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8+56/18 90/16+28/18 90/8+28/36 90/8+84/18 90/24+28/18 90/8+28/54 90/40+28/18 90/8+28/90 90/56+28/18