Add 12/3 and 21/80, Solve 4 0/3 + 21/80 as a fraction

Add 12/3 and 21/80

1^st number: 4 0/3, 2^nd number: 21/80

12/3 + 21/80 is 341/80.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 3 × 80 = 240,
12/3 = 12 × 80/3 × 80 = 960/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240
Add the two like fractions:
960/240 + 63/240 = 960 + 63/240 = 1023/240
1023/240 simplified gives 341/80
So, 12/3 + 21/80 = 341/80
In mixed form: 421/80

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