Add 18/36 and 40/21, Solve 18/36 + 1 19/21 as a fraction

Add 18/36 and 40/21

1^st number: 18/36, 2^nd number: 1 19/21

18/36 + 40/21 is 101/42.

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

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
18/36 = 18 × 7/36 × 7 = 126/252
Likewise, for the 2nd fraction, since 21 × 12 = 252,
40/21 = 40 × 12/21 × 12 = 480/252
Add the two like fractions:
126/252 + 480/252 = 126 + 480/252 = 606/252
606/252 simplified gives 101/42
So, 18/36 + 40/21 = 101/42
In mixed form: 217/42

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