Add 27/90 and 7/8
27/90 + 7/8 is 47/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 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 8 × 45 = 360,
7/8 = 7 × 45/8 × 45 = 315/360 - Add the two like fractions:
108/360 + 315/360 = 108 + 315/360 = 423/360 - 423/360 simplified gives 47/40
- So, 27/90 + 7/8 = 47/40
In mixed form: 17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/90+7/8 27/90+14/8 27/90+7/16 81/90+7/8 27/90+21/8 27/90+7/24 27/90+35/8 27/90+7/40 27/90+49/8 27/90+7/56