Add 20/42 and 6/63
20/42 + 6/63 is 4/7.
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,
20/42 = 20 × 3/42 × 3 = 60/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
6/63 = 6 × 2/63 × 2 = 12/126 - Add the two like fractions:
60/126 + 12/126 = 60 + 12/126 = 72/126 - 72/126 simplified gives 4/7
- So, 20/42 + 6/63 = 4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42+6/63 20/42+12/63 20/84+6/63 60/42+6/63 20/42+18/63 20/42+30/63 20/42+42/63