Add 54/4 and 21/36, Solve 13 2/4 + 21/36 as a fraction

Add 54/4 and 21/36

1^st number: 13 2/4, 2^nd number: 21/36

54/4 + 21/36 is 169/12.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 36 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 4 × 9 = 36,
54/4 = 54 × 9/4 × 9 = 486/36
Likewise, for the 2nd fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36
Add the two like fractions:
486/36 + 21/36 = 486 + 21/36 = 507/36
507/36 simplified gives 169/12
So, 54/4 + 21/36 = 169/12
In mixed form: 141/12

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