Add 20/50 and 27/90
20/50 + 27/90 is 7/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
20/50 = 20 × 9/50 × 9 = 180/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
27/90 = 27 × 5/90 × 5 = 135/450 - Add the two like fractions:
180/450 + 135/450 = 180 + 135/450 = 315/450 - 315/450 simplified gives 7/10
- So, 20/50 + 27/90 = 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/50+27/90 20/50+54/90 60/50+27/90 20/50+81/90