Add 45/80 and 21/27
45/80 + 21/27 is 193/144.
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,
45/80 = 45 × 27/80 × 27 = 1215/2160 - Likewise, for the 2nd fraction, since 27 × 80 = 2160,
21/27 = 21 × 80/27 × 80 = 1680/2160 - Add the two like fractions:
1215/2160 + 1680/2160 = 1215 + 1680/2160 = 2895/2160 - 2895/2160 simplified gives 193/144
- So, 45/80 + 21/27 = 193/144
In mixed form: 149/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+21/27 45/80+42/27 45/80+21/54 45/80+63/27 45/80+21/81