Add 54/56 and 7/84
54/56 + 7/84 is 22/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
54/56 = 54 × 3/56 × 3 = 162/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
7/84 = 7 × 2/84 × 2 = 14/168 - Add the two like fractions:
162/168 + 14/168 = 162 + 14/168 = 176/168 - 176/168 simplified gives 22/21
- So, 54/56 + 7/84 = 22/21
In mixed form: 11/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/56+14/84 54/56+21/84 54/56+35/84 54/56+49/84