Add 30/21 and 54/27, Solve 1 9/21 + 2 0/27 as a fraction

Add 30/21 and 54/27

1^st number: 1 9/21, 2^nd number: 2 0/27

30/21 + 54/27 is 24/7.

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,
30/21 = 30 × 9/21 × 9 = 270/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
54/27 = 54 × 7/27 × 7 = 378/189
Add the two like fractions:
270/189 + 378/189 = 270 + 378/189 = 648/189
648/189 simplified gives 24/7
So, 30/21 + 54/27 = 24/7
In mixed form: 33/7

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