Add 20/90 and 80/6
1st number: 20/90, 2nd number: 13 2/6
20/90 + 80/6 is 122/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 6 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Likewise, for the 2nd fraction, since 6 × 15 = 90,
80/6 = 80 × 15/6 × 15 = 1200/90 - Add the two like fractions:
20/90 + 1200/90 = 20 + 1200/90 = 1220/90 - 1220/90 simplified gives 122/9
- So, 20/90 + 80/6 = 122/9
In mixed form: 135/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+80/6 20/90+80/12 60/90+80/6 20/90+80/18 20/90+80/30 20/90+80/42