Add 20/7 and 72/63
1st number: 2 6/7, 2nd number: 1 9/63
20/7 + 72/63 is 4/1.
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,
20/7 = 20 × 9/7 × 9 = 180/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
72/63 = 72 × 1/63 × 1 = 72/63 - Add the two like fractions:
180/63 + 72/63 = 180 + 72/63 = 252/63 - 252/63 simplified gives 4/1
- So, 20/7 + 72/63 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7+72/63 20/14+72/63 60/7+72/63 20/21+72/63 20/35+72/63 20/49+72/63