Add 25/21 and 21/27, Solve 1 4/21 + 21/27 as a fraction

Add 25/21 and 21/27

1^st number: 1 4/21, 2^nd number: 21/27

25/21 + 21/27 is 124/63.

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,
25/21 = 25 × 9/21 × 9 = 225/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
21/27 = 21 × 7/27 × 7 = 147/189
Add the two like fractions:
225/189 + 147/189 = 225 + 147/189 = 372/189
372/189 simplified gives 124/63
So, 25/21 + 21/27 = 124/63
In mixed form: 161/63

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