Add 81/18 and 8/21
1st number: 4 9/18, 2nd number: 8/21
81/18 + 8/21 is 205/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 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 21 × 6 = 126,
8/21 = 8 × 6/21 × 6 = 48/126 - Add the two like fractions:
567/126 + 48/126 = 567 + 48/126 = 615/126 - 615/126 simplified gives 205/42
- So, 81/18 + 8/21 = 205/42
In mixed form: 437/42
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