Add 21/3 and 75/21, Solve 7 0/3 + 3 12/21 as a fraction

Add 21/3 and 75/21

1^st number: 7 0/3, 2^nd number: 3 12/21

21/3 + 75/21 is 74/7.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21

Next, find the equivalent fraction of both fractional numbers with denominator 21
For the 1st fraction, since 3 × 7 = 21,
21/3 = 21 × 7/3 × 7 = 147/21
Likewise, for the 2nd fraction, since 21 × 1 = 21,
75/21 = 75 × 1/21 × 1 = 75/21
Add the two like fractions:
147/21 + 75/21 = 147 + 75/21 = 222/21
222/21 simplified gives 74/7
So, 21/3 + 75/21 = 74/7
In mixed form: 104/7

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