Add 84/63 and 72/9
1st number: 1 21/63, 2nd number: 8 0/9
84/63 + 72/9 is 28/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
84/63 = 84 × 1/63 × 1 = 84/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
72/9 = 72 × 7/9 × 7 = 504/63 - Add the two like fractions:
84/63 + 504/63 = 84 + 504/63 = 588/63 - 588/63 simplified gives 28/3
- So, 84/63 + 72/9 = 28/3
In mixed form: 91/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+72/18 84/63+72/27 84/63+72/45 84/63+72/63