Add 9/36 and 84/21, Solve 9/36 + 4 0/21 as a fraction

Add 9/36 and 84/21

1^st number: 9/36, 2^nd number: 4 0/21

9/36 + 84/21 is 17/4.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
9/36 = 9 × 7/36 × 7 = 63/252
Likewise, for the 2nd fraction, since 21 × 12 = 252,
84/21 = 84 × 12/21 × 12 = 1008/252
Add the two like fractions:
63/252 + 1008/252 = 63 + 1008/252 = 1071/252
1071/252 simplified gives 17/4
So, 9/36 + 84/21 = 17/4
In mixed form: 41/4

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