Add 28/42 and 81/84
28/42 + 81/84 is 137/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
28/42 = 28 × 2/42 × 2 = 56/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
81/84 = 81 × 1/84 × 1 = 81/84 - Add the two like fractions:
56/84 + 81/84 = 56 + 81/84 = 137/84 - So, 28/42 + 81/84 = 137/84
In mixed form: 153/84
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