Add 20/5 and 54/18
1st number: 4 0/5, 2nd number: 3 0/18
20/5 + 54/18 is 7/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
20/5 = 20 × 18/5 × 18 = 360/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
54/18 = 54 × 5/18 × 5 = 270/90 - Add the two like fractions:
360/90 + 270/90 = 360 + 270/90 = 630/90 - 630/90 simplified gives 7/1
- So, 20/5 + 54/18 = 7/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5+54/18 20/10+54/18 20/5+54/36 60/5+54/18 20/15+54/18 20/25+54/18 20/5+54/90 20/35+54/18