Add 2/42 and 72/63
1st number: 2/42, 2nd number: 1 9/63
2/42 + 72/63 is 25/21.
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,
2/42 = 2 × 3/42 × 3 = 6/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
72/63 = 72 × 2/63 × 2 = 144/126 - Add the two like fractions:
6/126 + 144/126 = 6 + 144/126 = 150/126 - 150/126 simplified gives 25/21
- So, 2/42 + 72/63 = 25/21
In mixed form: 14/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/42+72/63 2/84+72/63 6/42+72/63 10/42+72/63 14/42+72/63