Add 2/21 and 54/56
2/21 + 54/56 is 89/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
2/21 = 2 × 8/21 × 8 = 16/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
54/56 = 54 × 3/56 × 3 = 162/168 - Add the two like fractions:
16/168 + 162/168 = 16 + 162/168 = 178/168 - 178/168 simplified gives 89/84
- So, 2/21 + 54/56 = 89/84
In mixed form: 15/84
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