Add 27/42 and 7/8
27/42 + 7/8 is 85/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
27/42 = 27 × 4/42 × 4 = 108/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
7/8 = 7 × 21/8 × 21 = 147/168 - Add the two like fractions:
108/168 + 147/168 = 108 + 147/168 = 255/168 - 255/168 simplified gives 85/56
- So, 27/42 + 7/8 = 85/56
In mixed form: 129/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+7/8 27/42+14/8 27/84+7/8 27/42+7/16 81/42+7/8 27/42+21/8 27/42+7/24 27/42+35/8 27/42+7/40 27/42+49/8 27/42+7/56