Add 28/80 and 90/27
1st number: 28/80, 2nd number: 3 9/27
28/80 + 90/27 is 221/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 27 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
28/80 = 28 × 27/80 × 27 = 756/2160 - Likewise, for the 2nd fraction, since 27 × 80 = 2160,
90/27 = 90 × 80/27 × 80 = 7200/2160 - Add the two like fractions:
756/2160 + 7200/2160 = 756 + 7200/2160 = 7956/2160 - 7956/2160 simplified gives 221/60
- So, 28/80 + 90/27 = 221/60
In mixed form: 341/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/80+90/27 28/80+90/54 84/80+90/27 28/80+90/81