Add 54/18 and 20/42
1st number: 3 0/18, 2nd number: 20/42
54/18 + 20/42 is 73/21.
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,
54/18 = 54 × 7/18 × 7 = 378/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
20/42 = 20 × 3/42 × 3 = 60/126 - Add the two like fractions:
378/126 + 60/126 = 378 + 60/126 = 438/126 - 438/126 simplified gives 73/21
- So, 54/18 + 20/42 = 73/21
In mixed form: 310/21
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