Add 75/90 and 9/20
75/90 + 9/20 is 77/60.
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,
75/90 = 75 × 2/90 × 2 = 150/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Add the two like fractions:
150/180 + 81/180 = 150 + 81/180 = 231/180 - 231/180 simplified gives 77/60
- So, 75/90 + 9/20 = 77/60
In mixed form: 117/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/90+18/20 75/90+9/40 75/90+27/20 75/90+9/60 75/90+45/20 75/90+63/20