Add 80/16 and 75/21, Solve 5 0/16 + 3 12/21 as a fraction

Add 80/16 and 75/21

1^st number: 5 0/16, 2^nd number: 3 12/21

80/16 + 75/21 is 60/7.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 16 × 21 = 336,
80/16 = 80 × 21/16 × 21 = 1680/336
Likewise, for the 2nd fraction, since 21 × 16 = 336,
75/21 = 75 × 16/21 × 16 = 1200/336
Add the two like fractions:
1680/336 + 1200/336 = 1680 + 1200/336 = 2880/336
2880/336 simplified gives 60/7
So, 80/16 + 75/21 = 60/7
In mixed form: 84/7

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