Add 4/7 and 15/63
4/7 + 15/63 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
4/7 = 4 × 9/7 × 9 = 36/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
15/63 = 15 × 1/63 × 1 = 15/63 - Add the two like fractions:
36/63 + 15/63 = 36 + 15/63 = 51/63 - 51/63 simplified gives 17/21
- So, 4/7 + 15/63 = 17/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7+15/63 4/7+30/63 4/14+15/63 12/7+15/63 4/7+45/63 4/21+15/63 20/7+15/63 4/7+75/63 4/35+15/63 28/7+15/63 4/49+15/63