Add 20/21 and 35/27, Solve 20/21 + 1 8/27 as a fraction

Add 20/21 and 35/27

1^st number: 20/21, 2^nd number: 1 8/27

20/21 + 35/27 is 425/189.

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,
20/21 = 20 × 9/21 × 9 = 180/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
35/27 = 35 × 7/27 × 7 = 245/189
Add the two like fractions:
180/189 + 245/189 = 180 + 245/189 = 425/189
So, 20/21 + 35/27 = 425/189
In mixed form: 247/189

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