Add 27/8 and 18/90
1st number: 3 3/8, 2nd number: 18/90
27/8 + 18/90 is 143/40.
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,
27/8 = 27 × 45/8 × 45 = 1215/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
18/90 = 18 × 4/90 × 4 = 72/360 - Add the two like fractions:
1215/360 + 72/360 = 1215 + 72/360 = 1287/360 - 1287/360 simplified gives 143/40
- So, 27/8 + 18/90 = 143/40
In mixed form: 323/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/8+18/90 27/8+36/90 27/16+18/90 81/8+18/90 27/8+54/90 27/24+18/90 27/40+18/90 27/56+18/90