Add 9/6 and 84/21, Solve 1 3/6 + 4 0/21 as a fraction

Add 9/6 and 84/21

1^st number: 1 3/6, 2^nd number: 4 0/21

9/6 + 84/21 is 11/2.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 6 × 7 = 42,
9/6 = 9 × 7/6 × 7 = 63/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
84/21 = 84 × 2/21 × 2 = 168/42
Add the two like fractions:
63/42 + 168/42 = 63 + 168/42 = 231/42
231/42 simplified gives 11/2
So, 9/6 + 84/21 = 11/2
In mixed form: 51/2

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