Add 45/54 and 80/20
1st number: 45/54, 2nd number: 4 0/20
45/54 + 80/20 is 29/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
45/54 = 45 × 10/54 × 10 = 450/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
80/20 = 80 × 27/20 × 27 = 2160/540 - Add the two like fractions:
450/540 + 2160/540 = 450 + 2160/540 = 2610/540 - 2610/540 simplified gives 29/6
- So, 45/54 + 80/20 = 29/6
In mixed form: 45/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/54+80/20 45/54+80/40 45/54+80/60