Add 20/27 and 45/20
1st number: 20/27, 2nd number: 2 5/20
20/27 + 45/20 is 323/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
20/27 = 20 × 20/27 × 20 = 400/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
45/20 = 45 × 27/20 × 27 = 1215/540 - Add the two like fractions:
400/540 + 1215/540 = 400 + 1215/540 = 1615/540 - 1615/540 simplified gives 323/108
- So, 20/27 + 45/20 = 323/108
In mixed form: 2107/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/27+45/20 20/27+90/20 20/54+45/20 20/27+45/40 60/27+45/20 20/81+45/20 20/27+45/60