Add 24/21 and 42/27, Solve 1 3/21 + 1 15/27 as a fraction

Add 24/21 and 42/27

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

24/21 + 42/27 is 170/63.

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,
24/21 = 24 × 9/21 × 9 = 216/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
42/27 = 42 × 7/27 × 7 = 294/189
Add the two like fractions:
216/189 + 294/189 = 216 + 294/189 = 510/189
510/189 simplified gives 170/63
So, 24/21 + 42/27 = 170/63
In mixed form: 244/63

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