Add 72/18 and 21/36, Solve 4 0/18 + 21/36 as a fraction

Add 72/18 and 21/36

1^st number: 4 0/18, 2^nd number: 21/36

72/18 + 21/36 is 55/12.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 36 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 18 × 2 = 36,
72/18 = 72 × 2/18 × 2 = 144/36
Likewise, for the 2nd fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36
Add the two like fractions:
144/36 + 21/36 = 144 + 21/36 = 165/36
165/36 simplified gives 55/12
So, 72/18 + 21/36 = 55/12
In mixed form: 47/12

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