Add 21/27 and 20/7, Solve 21/27 + 2 6/7 as a fraction

Add 21/27 and 20/7

1^st number: 21/27, 2^nd number: 2 6/7

21/27 + 20/7 is 229/63.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 27 × 7 = 189,
21/27 = 21 × 7/27 × 7 = 147/189
Likewise, for the 2nd fraction, since 7 × 27 = 189,
20/7 = 20 × 27/7 × 27 = 540/189
Add the two like fractions:
147/189 + 540/189 = 147 + 540/189 = 687/189
687/189 simplified gives 229/63
So, 21/27 + 20/7 = 229/63
In mixed form: 340/63

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