Add 49/42 and 72/18
1st number: 1 7/42, 2nd number: 4 0/18
49/42 + 72/18 is 31/6.
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,
49/42 = 49 × 3/42 × 3 = 147/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
72/18 = 72 × 7/18 × 7 = 504/126 - Add the two like fractions:
147/126 + 504/126 = 147 + 504/126 = 651/126 - 651/126 simplified gives 31/6
- So, 49/42 + 72/18 = 31/6
In mixed form: 51/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/42+72/18 49/84+72/18 49/42+72/36 49/42+72/54 49/42+72/90