Add 84/63 and 9/18
1st number: 1 21/63, 2nd number: 9/18
84/63 + 9/18 is 11/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
84/63 = 84 × 2/63 × 2 = 168/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
9/18 = 9 × 7/18 × 7 = 63/126 - Add the two like fractions:
168/126 + 63/126 = 168 + 63/126 = 231/126 - 231/126 simplified gives 11/6
- So, 84/63 + 9/18 = 11/6
In mixed form: 15/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+9/36 84/63+27/18 84/63+9/54 84/63+45/18 84/63+9/90 84/63+63/18