Add 28/42 and 25/18
1st number: 28/42, 2nd number: 1 7/18
28/42 + 25/18 is 37/18.
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,
28/42 = 28 × 3/42 × 3 = 84/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
25/18 = 25 × 7/18 × 7 = 175/126 - Add the two like fractions:
84/126 + 175/126 = 84 + 175/126 = 259/126 - 259/126 simplified gives 37/18
- So, 28/42 + 25/18 = 37/18
In mixed form: 21/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+25/18 28/42+50/18 28/84+25/18 28/42+25/36 84/42+25/18 28/42+75/18 28/42+25/54 28/42+25/90