Add 84/21 and 7/12, Solve 4 0/21 + 7/12 as a fraction

Add 84/21 and 7/12

1^st number: 4 0/21, 2^nd number: 7/12

84/21 + 7/12 is 55/12.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 21 × 4 = 84,
84/21 = 84 × 4/21 × 4 = 336/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
7/12 = 7 × 7/12 × 7 = 49/84
Add the two like fractions:
336/84 + 49/84 = 336 + 49/84 = 385/84
385/84 simplified gives 55/12
So, 84/21 + 7/12 = 55/12
In mixed form: 47/12

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