Add 30/27 and 15/21, Solve 1 3/27 + 15/21 as a fraction

Add 30/27 and 15/21

1^st number: 1 3/27, 2^nd number: 15/21

30/27 + 15/21 is 115/63.

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,
30/27 = 30 × 7/27 × 7 = 210/189
Likewise, for the 2nd fraction, since 21 × 9 = 189,
15/21 = 15 × 9/21 × 9 = 135/189
Add the two like fractions:
210/189 + 135/189 = 210 + 135/189 = 345/189
345/189 simplified gives 115/63
So, 30/27 + 15/21 = 115/63
In mixed form: 152/63

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