Add 2/42 and 21/63
2/42 + 21/63 is 8/21.
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,
21/63 = 21 × 2/63 × 2 = 42/126 - Add the two like fractions:
6/126 + 42/126 = 6 + 42/126 = 48/126 - 48/126 simplified gives 8/21
- So, 2/42 + 21/63 = 8/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/42+21/63 2/42+42/63 2/84+21/63 6/42+21/63 10/42+21/63 14/42+21/63