Add 84/63 and 4/9
1st number: 1 21/63, 2nd number: 4/9
84/63 + 4/9 is 16/9.
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,
4/9 = 4 × 7/9 × 7 = 28/63 - Add the two like fractions:
84/63 + 28/63 = 84 + 28/63 = 112/63 - 112/63 simplified gives 16/9
- So, 84/63 + 4/9 = 16/9
In mixed form: 17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+8/9 84/63+4/18 84/63+12/9 84/63+4/27 84/63+20/9 84/63+4/45 84/63+28/9 84/63+4/63