Add 30/54 and 15/20
30/54 + 15/20 is 47/36.
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,
30/54 = 30 × 10/54 × 10 = 300/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
15/20 = 15 × 27/20 × 27 = 405/540 - Add the two like fractions:
300/540 + 405/540 = 300 + 405/540 = 705/540 - 705/540 simplified gives 47/36
- So, 30/54 + 15/20 = 47/36
In mixed form: 111/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/54+15/20 30/54+30/20 30/54+15/40 90/54+15/20 30/54+45/20 30/54+15/60 30/54+75/20