Add 7/27 and 45/20
1st number: 7/27, 2nd number: 2 5/20
7/27 + 45/20 is 271/108.
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,
7/27 = 7 × 20/27 × 20 = 140/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
45/20 = 45 × 27/20 × 27 = 1215/540 - Add the two like fractions:
140/540 + 1215/540 = 140 + 1215/540 = 1355/540 - 1355/540 simplified gives 271/108
- So, 7/27 + 45/20 = 271/108
In mixed form: 255/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/27+45/20 7/27+90/20 7/54+45/20 7/27+45/40 21/27+45/20 7/81+45/20 7/27+45/60 35/27+45/20 49/27+45/20