Add 54/40 and 20/80
1st number: 1 14/40, 2nd number: 20/80
54/40 + 20/80 is 8/5.
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,
54/40 = 54 × 2/40 × 2 = 108/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
20/80 = 20 × 1/80 × 1 = 20/80 - Add the two like fractions:
108/80 + 20/80 = 108 + 20/80 = 128/80 - 128/80 simplified gives 8/5
- So, 54/40 + 20/80 = 8/5
In mixed form: 13/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40+40/80 54/80+20/80 54/40+60/80