Add 27/18 and 90/8
1st number: 1 9/18, 2nd number: 11 2/8
27/18 + 90/8 is 51/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
27/18 = 27 × 4/18 × 4 = 108/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
90/8 = 90 × 9/8 × 9 = 810/72 - Add the two like fractions:
108/72 + 810/72 = 108 + 810/72 = 918/72 - 918/72 simplified gives 51/4
- So, 27/18 + 90/8 = 51/4
In mixed form: 123/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18+90/8 27/36+90/8 27/18+90/16 81/18+90/8 27/54+90/8 27/18+90/24 27/90+90/8 27/18+90/40 27/18+90/56