Add 20/90 and 20/36
20/90 + 20/36 is 7/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
20/36 = 20 × 5/36 × 5 = 100/180 - Add the two like fractions:
40/180 + 100/180 = 40 + 100/180 = 140/180 - 140/180 simplified gives 7/9
- So, 20/90 + 20/36 = 7/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+20/36 20/90+40/36 20/90+20/72 60/90+20/36 20/90+60/36