Add 15/42 and 3/63
15/42 + 3/63 is 17/42.
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,
15/42 = 15 × 3/42 × 3 = 45/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
3/63 = 3 × 2/63 × 2 = 6/126 - Add the two like fractions:
45/126 + 6/126 = 45 + 6/126 = 51/126 - 51/126 simplified gives 17/42
- So, 15/42 + 3/63 = 17/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+3/63 15/42+6/63 15/84+3/63 45/42+3/63 15/42+9/63 75/42+3/63 15/42+15/63 15/42+21/63