Add 21/42 and 75/36, Solve 21/42 + 2 3/36 as a fraction

Add 21/42 and 75/36

1^st number: 21/42, 2^nd number: 2 3/36

21/42 + 75/36 is 31/12.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 42 × 6 = 252,
21/42 = 21 × 6/42 × 6 = 126/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
75/36 = 75 × 7/36 × 7 = 525/252
Add the two like fractions:
126/252 + 525/252 = 126 + 525/252 = 651/252
651/252 simplified gives 31/12
So, 21/42 + 75/36 = 31/12
In mixed form: 27/12

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