Add 21/3 and 12/84, Solve 7 0/3 + 12/84 as a fraction

Add 21/3 and 12/84

1^st number: 7 0/3, 2^nd number: 12/84

21/3 + 12/84 is 50/7.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 3 × 28 = 84,
21/3 = 21 × 28/3 × 28 = 588/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
12/84 = 12 × 1/84 × 1 = 12/84
Add the two like fractions:
588/84 + 12/84 = 588 + 12/84 = 600/84
600/84 simplified gives 50/7
So, 21/3 + 12/84 = 50/7
In mixed form: 71/7

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