Add 4/45 and 5/80
4/45 + 5/80 is 109/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
4/45 = 4 × 16/45 × 16 = 64/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
5/80 = 5 × 9/80 × 9 = 45/720 - Add the two like fractions:
64/720 + 45/720 = 64 + 45/720 = 109/720 - So, 4/45 + 5/80 = 109/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45+5/80 4/45+10/80 4/90+5/80 12/45+5/80 4/45+15/80 20/45+5/80 4/45+25/80 28/45+5/80 4/45+35/80