Add 10/90 and 75/20
1st number: 10/90, 2nd number: 3 15/20
10/90 + 75/20 is 139/36.
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,
10/90 = 10 × 2/90 × 2 = 20/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
75/20 = 75 × 9/20 × 9 = 675/180 - Add the two like fractions:
20/180 + 675/180 = 20 + 675/180 = 695/180 - 695/180 simplified gives 139/36
- So, 10/90 + 75/20 = 139/36
In mixed form: 331/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/90+75/20 10/90+75/40 30/90+75/20 10/90+75/60 50/90+75/20 70/90+75/20