Add 12/42 and 75/63
1st number: 12/42, 2nd number: 1 12/63
12/42 + 75/63 is 31/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 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 63 × 2 = 126,
75/63 = 75 × 2/63 × 2 = 150/126 - Add the two like fractions:
36/126 + 150/126 = 36 + 150/126 = 186/126 - 186/126 simplified gives 31/21
- So, 12/42 + 75/63 = 31/21
In mixed form: 110/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42+75/63 12/84+75/63 36/42+75/63 60/42+75/63 84/42+75/63