Add 28/42 and 81/7
1st number: 28/42, 2nd number: 11 4/7
28/42 + 81/7 is 257/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
28/42 = 28 × 1/42 × 1 = 28/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
81/7 = 81 × 6/7 × 6 = 486/42 - Add the two like fractions:
28/42 + 486/42 = 28 + 486/42 = 514/42 - 514/42 simplified gives 257/21
- So, 28/42 + 81/7 = 257/21
In mixed form: 125/21
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