Add 20/10 and 27/18
1st number: 2 0/10, 2nd number: 1 9/18
20/10 + 27/18 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
20/10 = 20 × 9/10 × 9 = 180/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
27/18 = 27 × 5/18 × 5 = 135/90 - Add the two like fractions:
180/90 + 135/90 = 180 + 135/90 = 315/90 - 315/90 simplified gives 7/2
- So, 20/10 + 27/18 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10+27/18 20/10+54/18 20/10+27/36 60/10+27/18 20/10+81/18 20/30+27/18 20/10+27/54 20/50+27/18 20/10+27/90 20/70+27/18