Add 8/21 and 54/36, Solve 8/21 + 1 18/36 as a fraction

Add 8/21 and 54/36

1^st number: 8/21, 2^nd number: 1 18/36

8/21 + 54/36 is 79/42.

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

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 21 × 12 = 252,
8/21 = 8 × 12/21 × 12 = 96/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
54/36 = 54 × 7/36 × 7 = 378/252
Add the two like fractions:
96/252 + 378/252 = 96 + 378/252 = 474/252
474/252 simplified gives 79/42
So, 8/21 + 54/36 = 79/42
In mixed form: 137/42

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