Add 80/20 and 50/40
1st number: 4 0/20, 2nd number: 1 10/40
80/20 + 50/40 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
80/20 = 80 × 2/20 × 2 = 160/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
50/40 = 50 × 1/40 × 1 = 50/40 - Add the two like fractions:
160/40 + 50/40 = 160 + 50/40 = 210/40 - 210/40 simplified gives 21/4
- So, 80/20 + 50/40 = 21/4
In mixed form: 51/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/40+50/40 80/20+50/80 80/60+50/40