Add 5/4 and 80/45
1st number: 1 1/4, 2nd number: 1 35/45
5/4 + 80/45 is 109/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
5/4 = 5 × 45/4 × 45 = 225/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
80/45 = 80 × 4/45 × 4 = 320/180 - Add the two like fractions:
225/180 + 320/180 = 225 + 320/180 = 545/180 - 545/180 simplified gives 109/36
- So, 5/4 + 80/45 = 109/36
In mixed form: 31/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4+80/45 5/8+80/45 5/4+80/90 15/4+80/45 5/12+80/45 25/4+80/45 5/20+80/45 35/4+80/45 5/28+80/45