Add 1/90 and 90/20
1st number: 1/90, 2nd number: 4 10/20
1/90 + 90/20 is 203/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
1/90 = 1 × 2/90 × 2 = 2/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
90/20 = 90 × 9/20 × 9 = 810/180 - Add the two like fractions:
2/180 + 810/180 = 2 + 810/180 = 812/180 - 812/180 simplified gives 203/45
- So, 1/90 + 90/20 = 203/45
In mixed form: 423/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/90+90/20 1/90+90/40 3/90+90/20 1/90+90/60 5/90+90/20 7/90+90/20