Add 75/21 and 3/6, Solve 3 12/21 + 3/6 as a fraction

Add 75/21 and 3/6

1^st number: 3 12/21, 2^nd number: 3/6

75/21 + 3/6 is 57/14.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
75/21 = 75 × 2/21 × 2 = 150/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
3/6 = 3 × 7/6 × 7 = 21/42
Add the two like fractions:
150/42 + 21/42 = 150 + 21/42 = 171/42
171/42 simplified gives 57/14
So, 75/21 + 3/6 = 57/14
In mixed form: 41/14

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