Add 36/21 and 3/54, Solve 1 15/21 + 3/54 as a fraction

Add 36/21 and 3/54

1^st number: 1 15/21, 2^nd number: 3/54

36/21 + 3/54 is 223/126.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
36/21 = 36 × 18/21 × 18 = 648/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
3/54 = 3 × 7/54 × 7 = 21/378
Add the two like fractions:
648/378 + 21/378 = 648 + 21/378 = 669/378
669/378 simplified gives 223/126
So, 36/21 + 3/54 = 223/126
In mixed form: 197/126

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