Add 4/40 and 75/80
4/40 + 75/80 is 83/80.
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,
4/40 = 4 × 2/40 × 2 = 8/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
75/80 = 75 × 1/80 × 1 = 75/80 - Add the two like fractions:
8/80 + 75/80 = 8 + 75/80 = 83/80 - So, 4/40 + 75/80 = 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: 8/40+75/80 4/80+75/80 12/40+75/80 20/40+75/80 28/40+75/80