Add 12/42 and 36/18
1st number: 12/42, 2nd number: 2 0/18
12/42 + 36/18 is 16/7.
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,
12/42 = 12 × 3/42 × 3 = 36/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
36/18 = 36 × 7/18 × 7 = 252/126 - Add the two like fractions:
36/126 + 252/126 = 36 + 252/126 = 288/126 - 288/126 simplified gives 16/7
- So, 12/42 + 36/18 = 16/7
In mixed form: 22/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42+36/18 12/42+72/18 12/84+36/18 36/42+36/18 12/42+36/54 60/42+36/18 12/42+36/90 84/42+36/18