Add 90/40 and 9/20
1st number: 2 10/40, 2nd number: 9/20
90/40 + 9/20 is 27/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
90/40 = 90 × 1/40 × 1 = 90/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
9/20 = 9 × 2/20 × 2 = 18/40 - Add the two like fractions:
90/40 + 18/40 = 90 + 18/40 = 108/40 - 108/40 simplified gives 27/10
- So, 90/40 + 9/20 = 27/10
In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+18/20 90/80+9/20 90/40+9/40 90/40+27/20 90/40+9/60 90/40+45/20 90/40+63/20