Add 28/84 and 54/7
1st number: 28/84, 2nd number: 7 5/7
28/84 + 54/7 is 169/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
28/84 = 28 × 1/84 × 1 = 28/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
54/7 = 54 × 12/7 × 12 = 648/84 - Add the two like fractions:
28/84 + 648/84 = 28 + 648/84 = 676/84 - 676/84 simplified gives 169/21
- So, 28/84 + 54/7 = 169/21
In mixed form: 81/21
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