Add 20/4 and 9/90
1st number: 5 0/4, 2nd number: 9/90
20/4 + 9/90 is 51/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
20/4 = 20 × 45/4 × 45 = 900/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
9/90 = 9 × 2/90 × 2 = 18/180 - Add the two like fractions:
900/180 + 18/180 = 900 + 18/180 = 918/180 - 918/180 simplified gives 51/10
- So, 20/4 + 9/90 = 51/10
In mixed form: 51/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4+9/90 20/4+18/90 20/8+9/90 60/4+9/90 20/4+27/90 20/12+9/90 20/4+45/90 20/4+63/90 20/28+9/90