Add 81/18 and 80/42
1st number: 4 9/18, 2nd number: 1 38/42
81/18 + 80/42 is 269/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
81/18 = 81 × 7/18 × 7 = 567/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
80/42 = 80 × 3/42 × 3 = 240/126 - Add the two like fractions:
567/126 + 240/126 = 567 + 240/126 = 807/126 - 807/126 simplified gives 269/42
- So, 81/18 + 80/42 = 269/42
In mixed form: 617/42
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