Add 84/21 and 16/80, Solve 4 0/21 + 16/80 as a fraction

Add 84/21 and 16/80

1^st number: 4 0/21, 2^nd number: 16/80

84/21 + 16/80 is 21/5.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 21 × 80 = 1680,
84/21 = 84 × 80/21 × 80 = 6720/1680
Likewise, for the 2nd fraction, since 80 × 21 = 1680,
16/80 = 16 × 21/80 × 21 = 336/1680
Add the two like fractions:
6720/1680 + 336/1680 = 6720 + 336/1680 = 7056/1680
7056/1680 simplified gives 21/5
So, 84/21 + 16/80 = 21/5
In mixed form: 41/5

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