Add 7/21 and 84/27, Solve 7/21 + 3 3/27 as a fraction

Add 7/21 and 84/27

1^st number: 7/21, 2^nd number: 3 3/27

7/21 + 84/27 is 31/9.

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

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 21 × 9 = 189,
7/21 = 7 × 9/21 × 9 = 63/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
84/27 = 84 × 7/27 × 7 = 588/189
Add the two like fractions:
63/189 + 588/189 = 63 + 588/189 = 651/189
651/189 simplified gives 31/9
So, 7/21 + 84/27 = 31/9
In mixed form: 34/9

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