Add 20/40 and 50/54
20/40 + 50/54 is 77/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 54 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
20/40 = 20 × 27/40 × 27 = 540/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
50/54 = 50 × 20/54 × 20 = 1000/1080 - Add the two like fractions:
540/1080 + 1000/1080 = 540 + 1000/1080 = 1540/1080 - 1540/1080 simplified gives 77/54
- So, 20/40 + 50/54 = 77/54
In mixed form: 123/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80+50/54 60/40+50/54