Add 18/9 and 90/28
1st number: 2 0/9, 2nd number: 3 6/28
18/9 + 90/28 is 73/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
18/9 = 18 × 28/9 × 28 = 504/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
90/28 = 90 × 9/28 × 9 = 810/252 - Add the two like fractions:
504/252 + 810/252 = 504 + 810/252 = 1314/252 - 1314/252 simplified gives 73/14
- So, 18/9 + 90/28 = 73/14
In mixed form: 53/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+90/28 18/9+90/56 54/9+90/28 18/27+90/28 18/9+90/84 90/9+90/28 18/45+90/28 18/63+90/28