Add 5/40 and 75/80
5/40 + 75/80 is 17/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
5/40 = 5 × 2/40 × 2 = 10/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
75/80 = 75 × 1/80 × 1 = 75/80 - Add the two like fractions:
10/80 + 75/80 = 10 + 75/80 = 85/80 - 85/80 simplified gives 17/16
- So, 5/40 + 75/80 = 17/16
In mixed form: 11/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40+75/80 5/80+75/80 15/40+75/80 25/40+75/80 35/40+75/80