Add 90/40 and 9/5
1st number: 2 10/40, 2nd number: 1 4/5
90/40 + 9/5 is 81/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 5 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 5 × 8 = 40,
9/5 = 9 × 8/5 × 8 = 72/40 - Add the two like fractions:
90/40 + 72/40 = 90 + 72/40 = 162/40 - 162/40 simplified gives 81/20
- So, 90/40 + 9/5 = 81/20
In mixed form: 41/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+18/5 90/80+9/5 90/40+9/10 90/40+27/5 90/40+9/15 90/40+45/5 90/40+9/25 90/40+63/5 90/40+9/35