Add 27/54 and 84/21
1st number: 27/54, 2nd number: 4 0/21
27/54 + 84/21 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
27/54 = 27 × 7/54 × 7 = 189/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
84/21 = 84 × 18/21 × 18 = 1512/378 - Add the two like fractions:
189/378 + 1512/378 = 189 + 1512/378 = 1701/378 - 1701/378 simplified gives 9/2
- So, 27/54 + 84/21 = 9/2
In mixed form: 41/2
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