Add 15/63 and 1/42
15/63 + 1/42 is 11/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
15/63 = 15 × 2/63 × 2 = 30/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
1/42 = 1 × 3/42 × 3 = 3/126 - Add the two like fractions:
30/126 + 3/126 = 30 + 3/126 = 33/126 - 33/126 simplified gives 11/42
- So, 15/63 + 1/42 = 11/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/63+1/42 15/63+2/42 15/63+1/84 45/63+1/42 15/63+3/42 75/63+1/42 15/63+5/42 15/63+7/42