Add 54/8 and 21/12, Solve 6 6/8 + 1 9/12 as a fraction

Add 54/8 and 21/12

1^st number: 6 6/8, 2^nd number: 1 9/12

54/8 + 21/12 is 17/2.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 12 is 24

Next, find the equivalent fraction of both fractional numbers with denominator 24
For the 1st fraction, since 8 × 3 = 24,
54/8 = 54 × 3/8 × 3 = 162/24
Likewise, for the 2nd fraction, since 12 × 2 = 24,
21/12 = 21 × 2/12 × 2 = 42/24
Add the two like fractions:
162/24 + 42/24 = 162 + 42/24 = 204/24
204/24 simplified gives 17/2
So, 54/8 + 21/12 = 17/2
In mixed form: 81/2

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