Add 21/12 and 54/56
1st number: 1 9/12, 2nd number: 54/56
21/12 + 54/56 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 12 × 14 = 168,
21/12 = 21 × 14/12 × 14 = 294/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
54/56 = 54 × 3/56 × 3 = 162/168 - Add the two like fractions:
294/168 + 162/168 = 294 + 162/168 = 456/168 - 456/168 simplified gives 19/7
- So, 21/12 + 54/56 = 19/7
In mixed form: 25/7
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