Add 90/40 and 20/27
1st number: 2 10/40, 2nd number: 20/27
90/40 + 20/27 is 323/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
90/40 = 90 × 27/40 × 27 = 2430/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
20/27 = 20 × 40/27 × 40 = 800/1080 - Add the two like fractions:
2430/1080 + 800/1080 = 2430 + 800/1080 = 3230/1080 - 3230/1080 simplified gives 323/108
- So, 90/40 + 20/27 = 323/108
In mixed form: 2107/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+40/27 90/80+20/27 90/40+20/54 90/40+60/27 90/40+20/81