Add 84/63 and 90/8
1st number: 1 21/63, 2nd number: 11 2/8
84/63 + 90/8 is 151/12.
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,
90/8 = 90 × 63/8 × 63 = 5670/504 - Add the two like fractions:
672/504 + 5670/504 = 672 + 5670/504 = 6342/504 - 6342/504 simplified gives 151/12
- So, 84/63 + 90/8 = 151/12
In mixed form: 127/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+90/16 84/63+90/24 84/63+90/40 84/63+90/56