Add 27/90 and 18/40
27/90 + 18/40 is 3/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
27/90 = 27 × 4/90 × 4 = 108/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
18/40 = 18 × 9/40 × 9 = 162/360 - Add the two like fractions:
108/360 + 162/360 = 108 + 162/360 = 270/360 - 270/360 simplified gives 3/4
- So, 27/90 + 18/40 = 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/90+18/40 27/90+36/40 27/90+18/80 81/90+18/40 27/90+54/40 27/90+90/40