Add 54/56 and 21/84
54/56 + 21/84 is 17/14.
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,
21/84 = 21 × 2/84 × 2 = 42/168 - Add the two like fractions:
162/168 + 42/168 = 162 + 42/168 = 204/168 - 204/168 simplified gives 17/14
- So, 54/56 + 21/84 = 17/14
In mixed form: 13/14
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