Add 90/80 and 20/54
1st number: 1 10/80, 2nd number: 20/54
90/80 + 20/54 is 323/216.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 54 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
90/80 = 90 × 27/80 × 27 = 2430/2160 - Likewise, for the 2nd fraction, since 54 × 40 = 2160,
20/54 = 20 × 40/54 × 40 = 800/2160 - Add the two like fractions:
2430/2160 + 800/2160 = 2430 + 800/2160 = 3230/2160 - 3230/2160 simplified gives 323/216
- So, 90/80 + 20/54 = 323/216
In mixed form: 1107/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+40/54 90/80+60/54