Add 54/5 and 15/18
1st number: 10 4/5, 2nd number: 15/18
54/5 + 15/18 is 349/30.
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,
54/5 = 54 × 18/5 × 18 = 972/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Add the two like fractions:
972/90 + 75/90 = 972 + 75/90 = 1047/90 - 1047/90 simplified gives 349/30
- So, 54/5 + 15/18 = 349/30
In mixed form: 1119/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/5+30/18 54/10+15/18 54/5+15/36 54/5+45/18 54/15+15/18 54/5+15/54 54/5+75/18 54/25+15/18 54/5+15/90 54/35+15/18