Add 81/42 and 18/8
1st number: 1 39/42, 2nd number: 2 2/8
81/42 + 18/8 is 117/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
81/42 = 81 × 4/42 × 4 = 324/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
18/8 = 18 × 21/8 × 21 = 378/168 - Add the two like fractions:
324/168 + 378/168 = 324 + 378/168 = 702/168 - 702/168 simplified gives 117/28
- So, 81/42 + 18/8 = 117/28
In mixed form: 45/28
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