Add 12/21 and 42/18, Solve 12/21 + 2 6/18 as a fraction

Add 12/21 and 42/18

1^st number: 12/21, 2^nd number: 2 6/18

12/21 + 42/18 is 61/21.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
12/21 = 12 × 6/21 × 6 = 72/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
42/18 = 42 × 7/18 × 7 = 294/126
Add the two like fractions:
72/126 + 294/126 = 72 + 294/126 = 366/126
366/126 simplified gives 61/21
So, 12/21 + 42/18 = 61/21
In mixed form: 219/21

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