Add 81/27 and 5/21, Solve 3 0/27 + 5/21 as a fraction

Add 81/27 and 5/21

1^st number: 3 0/27, 2^nd number: 5/21

81/27 + 5/21 is 68/21.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 27 × 7 = 189,
81/27 = 81 × 7/27 × 7 = 567/189
Likewise, for the 2nd fraction, since 21 × 9 = 189,
5/21 = 5 × 9/21 × 9 = 45/189
Add the two like fractions:
567/189 + 45/189 = 567 + 45/189 = 612/189
612/189 simplified gives 68/21
So, 81/27 + 5/21 = 68/21
In mixed form: 35/21

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