Add 81/42 and 4/7
1st number: 1 39/42, 2nd number: 4/7
81/42 + 4/7 is 5/2.
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,
81/42 = 81 × 1/42 × 1 = 81/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
4/7 = 4 × 6/7 × 6 = 24/42 - Add the two like fractions:
81/42 + 24/42 = 81 + 24/42 = 105/42 - 105/42 simplified gives 5/2
- So, 81/42 + 4/7 = 5/2
In mixed form: 21/2
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