Add 45/75 and 35/80
45/75 + 35/80 is 83/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 80 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 75 × 16 = 1200,
45/75 = 45 × 16/75 × 16 = 720/1200 - Likewise, for the 2nd fraction, since 80 × 15 = 1200,
35/80 = 35 × 15/80 × 15 = 525/1200 - Add the two like fractions:
720/1200 + 525/1200 = 720 + 525/1200 = 1245/1200 - 1245/1200 simplified gives 83/80
- So, 45/75 + 35/80 = 83/80
In mixed form: 13/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75+35/80 45/75+70/80