Add 81/84 and 30/8
1st number: 81/84, 2nd number: 3 6/8
81/84 + 30/8 is 33/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
81/84 = 81 × 2/84 × 2 = 162/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
30/8 = 30 × 21/8 × 21 = 630/168 - Add the two like fractions:
162/168 + 630/168 = 162 + 630/168 = 792/168 - 792/168 simplified gives 33/7
- So, 81/84 + 30/8 = 33/7
In mixed form: 45/7
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