Add 6/4 and 21/42
1st number: 1 2/4, 2nd number: 21/42
6/4 + 21/42 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
6/4 = 6 × 21/4 × 21 = 126/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
21/42 = 21 × 2/42 × 2 = 42/84 - Add the two like fractions:
126/84 + 42/84 = 126 + 42/84 = 168/84 - 168/84 simplified gives 2/1
- So, 6/4 + 21/42 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/4+21/42 6/8+21/42 6/4+21/84 18/4+21/42 6/4+63/42 6/12+21/42 30/4+21/42 6/20+21/42 42/4+21/42 6/28+21/42