Add 15/7 and 20/63
1st number: 2 1/7, 2nd number: 20/63
15/7 + 20/63 is 155/63.
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,
15/7 = 15 × 9/7 × 9 = 135/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
20/63 = 20 × 1/63 × 1 = 20/63 - Add the two like fractions:
135/63 + 20/63 = 135 + 20/63 = 155/63 - So, 15/7 + 20/63 = 155/63
In mixed form: 229/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7+20/63 15/7+40/63 15/14+20/63 45/7+20/63 15/7+60/63 15/21+20/63 75/7+20/63 15/35+20/63 15/49+20/63