Add 30/42 and 5/18
30/42 + 5/18 is 125/126.
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,
30/42 = 30 × 3/42 × 3 = 90/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
5/18 = 5 × 7/18 × 7 = 35/126 - Add the two like fractions:
90/126 + 35/126 = 90 + 35/126 = 125/126 - So, 30/42 + 5/18 = 125/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42+5/18 30/42+10/18 30/84+5/18 30/42+5/36 90/42+5/18 30/42+15/18 30/42+5/54 30/42+25/18 30/42+5/90 30/42+35/18