Add 20/90 and 75/30
1st number: 20/90, 2nd number: 2 15/30
20/90 + 75/30 is 49/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 30 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 30 × 3 = 90,
75/30 = 75 × 3/30 × 3 = 225/90 - Add the two like fractions:
20/90 + 225/90 = 20 + 225/90 = 245/90 - 245/90 simplified gives 49/18
- So, 20/90 + 75/30 = 49/18
In mixed form: 213/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+75/30 20/90+75/60 60/90+75/30 20/90+75/90