Add 18/8 and 9/90
1st number: 2 2/8, 2nd number: 9/90
18/8 + 9/90 is 47/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
18/8 = 18 × 45/8 × 45 = 810/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
9/90 = 9 × 4/90 × 4 = 36/360 - Add the two like fractions:
810/360 + 36/360 = 810 + 36/360 = 846/360 - 846/360 simplified gives 47/20
- So, 18/8 + 9/90 = 47/20
In mixed form: 27/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+9/90 18/8+18/90 18/16+9/90 54/8+9/90 18/8+27/90 18/24+9/90 90/8+9/90 18/8+45/90 18/40+9/90 18/8+63/90 18/56+9/90