Add 84/63 and 15/8
1st number: 1 21/63, 2nd number: 1 7/8
84/63 + 15/8 is 77/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 8 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 8 × 63 = 504,
15/8 = 15 × 63/8 × 63 = 945/504 - Add the two like fractions:
672/504 + 945/504 = 672 + 945/504 = 1617/504 - 1617/504 simplified gives 77/24
- So, 84/63 + 15/8 = 77/24
In mixed form: 35/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+30/8 84/63+15/16 84/63+45/8 84/63+15/24 84/63+75/8 84/63+15/40 84/63+15/56