Add 54/42 and 24/18
1st number: 1 12/42, 2nd number: 1 6/18
54/42 + 24/18 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
54/42 = 54 × 3/42 × 3 = 162/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
24/18 = 24 × 7/18 × 7 = 168/126 - Add the two like fractions:
162/126 + 168/126 = 162 + 168/126 = 330/126 - 330/126 simplified gives 55/21
- So, 54/42 + 24/18 = 55/21
In mixed form: 213/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+48/18 54/84+24/18 54/42+24/36 54/42+72/18 54/42+24/54 54/42+24/90