Add 72/63 and 2/7
1st number: 1 9/63, 2nd number: 2/7
72/63 + 2/7 is 10/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
72/63 = 72 × 1/63 × 1 = 72/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
2/7 = 2 × 9/7 × 9 = 18/63 - Add the two like fractions:
72/63 + 18/63 = 72 + 18/63 = 90/63 - 90/63 simplified gives 10/7
- So, 72/63 + 2/7 = 10/7
In mixed form: 13/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/63+4/7 72/63+2/14 72/63+6/7 72/63+2/21 72/63+10/7 72/63+2/35 72/63+14/7 72/63+2/49