Add 12/42 and 75/9
1st number: 12/42, 2nd number: 8 3/9
12/42 + 75/9 is 181/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 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 9 × 14 = 126,
75/9 = 75 × 14/9 × 14 = 1050/126 - Add the two like fractions:
36/126 + 1050/126 = 36 + 1050/126 = 1086/126 - 1086/126 simplified gives 181/21
- So, 12/42 + 75/9 = 181/21
In mixed form: 813/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42+75/9 12/84+75/9 12/42+75/18 36/42+75/9 12/42+75/27 60/42+75/9 12/42+75/45 84/42+75/9 12/42+75/63