Add 15/42 and 25/18
1st number: 15/42, 2nd number: 1 7/18
15/42 + 25/18 is 110/63.
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,
15/42 = 15 × 3/42 × 3 = 45/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
25/18 = 25 × 7/18 × 7 = 175/126 - Add the two like fractions:
45/126 + 175/126 = 45 + 175/126 = 220/126 - 220/126 simplified gives 110/63
- So, 15/42 + 25/18 = 110/63
In mixed form: 147/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+25/18 15/42+50/18 15/84+25/18 15/42+25/36 45/42+25/18 15/42+75/18 15/42+25/54 75/42+25/18 15/42+25/90