Add 84/63 and 18/24
1st number: 1 21/63, 2nd number: 18/24
84/63 + 18/24 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 24 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
84/63 = 84 × 8/63 × 8 = 672/504 - Likewise, for the 2nd fraction, since 24 × 21 = 504,
18/24 = 18 × 21/24 × 21 = 378/504 - Add the two like fractions:
672/504 + 378/504 = 672 + 378/504 = 1050/504 - 1050/504 simplified gives 25/12
- So, 84/63 + 18/24 = 25/12
In mixed form: 21/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+36/24 84/63+18/48 84/63+54/24 84/63+18/72 84/63+90/24