Add 84/21 and 12/18, Solve 4 0/21 + 12/18 as a fraction

Add 84/21 and 12/18

1^st number: 4 0/21, 2^nd number: 12/18

84/21 + 12/18 is 14/3.

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,
84/21 = 84 × 6/21 × 6 = 504/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
12/18 = 12 × 7/18 × 7 = 84/126
Add the two like fractions:
504/126 + 84/126 = 504 + 84/126 = 588/126
588/126 simplified gives 14/3
So, 84/21 + 12/18 = 14/3
In mixed form: 42/3

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