Add 20/4 and 1/90
1st number: 5 0/4, 2nd number: 1/90
20/4 + 1/90 is 451/90.
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,
1/90 = 1 × 2/90 × 2 = 2/180 - Add the two like fractions:
900/180 + 2/180 = 900 + 2/180 = 902/180 - 902/180 simplified gives 451/90
- So, 20/4 + 1/90 = 451/90
In mixed form: 51/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4+1/90 20/4+2/90 20/8+1/90 60/4+1/90 20/4+3/90 20/12+1/90 20/4+5/90 20/4+7/90 20/28+1/90