Add 8/42 and 15/63
8/42 + 15/63 is 3/7.
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,
8/42 = 8 × 3/42 × 3 = 24/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
15/63 = 15 × 2/63 × 2 = 30/126 - Add the two like fractions:
24/126 + 30/126 = 24 + 30/126 = 54/126 - 54/126 simplified gives 3/7
- So, 8/42 + 15/63 = 3/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/42+15/63 8/42+30/63 8/84+15/63 24/42+15/63 8/42+45/63 40/42+15/63 8/42+75/63 56/42+15/63