Add 75/21 and 54/14, Solve 3 12/21 + 3 12/14 as a fraction

Add 75/21 and 54/14

1^st number: 3 12/21, 2^nd number: 3 12/14

75/21 + 54/14 is 52/7.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 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 14 × 3 = 42,
54/14 = 54 × 3/14 × 3 = 162/42
Add the two like fractions:
150/42 + 162/42 = 150 + 162/42 = 312/42
312/42 simplified gives 52/7
So, 75/21 + 54/14 = 52/7
In mixed form: 73/7

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