Add 18/56 and 81/42
1st number: 18/56, 2nd number: 1 39/42
18/56 + 81/42 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
18/56 = 18 × 3/56 × 3 = 54/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
81/42 = 81 × 4/42 × 4 = 324/168 - Add the two like fractions:
54/168 + 324/168 = 54 + 324/168 = 378/168 - 378/168 simplified gives 9/4
- So, 18/56 + 81/42 = 9/4
In mixed form: 21/4
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