Add 45/20 and 4/9
1st number: 2 5/20, 2nd number: 4/9
45/20 + 4/9 is 97/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
45/20 = 45 × 9/20 × 9 = 405/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
4/9 = 4 × 20/9 × 20 = 80/180 - Add the two like fractions:
405/180 + 80/180 = 405 + 80/180 = 485/180 - 485/180 simplified gives 97/36
- So, 45/20 + 4/9 = 97/36
In mixed form: 225/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+4/9 45/20+8/9 45/40+4/9 45/20+4/18 45/20+12/9 45/60+4/9 45/20+4/27 45/20+20/9 45/20+4/45 45/20+28/9 45/20+4/63