Add 21/9 and 4/80, Solve 2 3/9 + 4/80 as a fraction

Add 21/9 and 4/80

1^st number: 2 3/9, 2^nd number: 4/80

21/9 + 4/80 is 143/60.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 9 × 80 = 720,
21/9 = 21 × 80/9 × 80 = 1680/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
4/80 = 4 × 9/80 × 9 = 36/720
Add the two like fractions:
1680/720 + 36/720 = 1680 + 36/720 = 1716/720
1716/720 simplified gives 143/60
So, 21/9 + 4/80 = 143/60
In mixed form: 223/60

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