Add 9/42 and 9/18
9/42 + 9/18 is 5/7.
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,
9/42 = 9 × 3/42 × 3 = 27/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
9/18 = 9 × 7/18 × 7 = 63/126 - Add the two like fractions:
27/126 + 63/126 = 27 + 63/126 = 90/126 - 90/126 simplified gives 5/7
- So, 9/42 + 9/18 = 5/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+9/18 9/84+9/18 9/42+9/36 27/42+9/18 9/42+27/18 9/42+9/54 45/42+9/18 9/42+45/18 9/42+9/90 63/42+9/18 9/42+63/18