Add 84/7 and 28/8
1st number: 12 0/7, 2nd number: 3 4/8
84/7 + 28/8 is 31/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
84/7 = 84 × 8/7 × 8 = 672/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
28/8 = 28 × 7/8 × 7 = 196/56 - Add the two like fractions:
672/56 + 196/56 = 672 + 196/56 = 868/56 - 868/56 simplified gives 31/2
- So, 84/7 + 28/8 = 31/2
In mixed form: 151/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7+56/8 84/14+28/8 84/7+28/16 84/7+84/8 84/21+28/8 84/7+28/24 84/35+28/8 84/7+28/40 84/49+28/8 84/7+28/56