Add 9/42 and 84/7, Solve 9/42 + 12 0/7 as a fraction

Add 9/42 and 84/7

1^st number: 9/42, 2^nd number: 12 0/7

9/42 + 84/7 is 171/14.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 42 × 1 = 42,
9/42 = 9 × 1/42 × 1 = 9/42
Likewise, for the 2nd fraction, since 7 × 6 = 42,
84/7 = 84 × 6/7 × 6 = 504/42
Add the two like fractions:
9/42 + 504/42 = 9 + 504/42 = 513/42
513/42 simplified gives 171/14
So, 9/42 + 84/7 = 171/14
In mixed form: 123/14

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