Add 18/54 and 5/20
18/54 + 5/20 is 7/12.
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,
18/54 = 18 × 10/54 × 10 = 180/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
5/20 = 5 × 27/20 × 27 = 135/540 - Add the two like fractions:
180/540 + 135/540 = 180 + 135/540 = 315/540 - 315/540 simplified gives 7/12
- So, 18/54 + 5/20 = 7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/54+5/20 18/54+10/20 18/54+5/40 18/54+15/20 18/54+5/60 90/54+5/20 18/54+25/20 18/54+35/20