Add 72/63 and 9/7
1st number: 1 9/63, 2nd number: 1 2/7
72/63 + 9/7 is 17/7.
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,
9/7 = 9 × 9/7 × 9 = 81/63 - Add the two like fractions:
72/63 + 81/63 = 72 + 81/63 = 153/63 - 153/63 simplified gives 17/7
- So, 72/63 + 9/7 = 17/7
In mixed form: 23/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/63+18/7 72/63+9/14 72/63+27/7 72/63+9/21 72/63+45/7 72/63+9/35 72/63+63/7 72/63+9/49