Add 27/40 and 9/90
27/40 + 9/90 is 31/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
27/40 = 27 × 9/40 × 9 = 243/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
9/90 = 9 × 4/90 × 4 = 36/360 - Add the two like fractions:
243/360 + 36/360 = 243 + 36/360 = 279/360 - 279/360 simplified gives 31/40
- So, 27/40 + 9/90 = 31/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40+9/90 27/40+18/90 27/80+9/90 81/40+9/90 27/40+27/90 27/40+45/90 27/40+63/90