Add 72/80 and 21/9, Solve 72/80 + 2 3/9 as a fraction

Add 72/80 and 21/9

1^st number: 72/80, 2^nd number: 2 3/9

72/80 + 21/9 is 97/30.

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

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 80 × 9 = 720,
72/80 = 72 × 9/80 × 9 = 648/720
Likewise, for the 2nd fraction, since 9 × 80 = 720,
21/9 = 21 × 80/9 × 80 = 1680/720
Add the two like fractions:
648/720 + 1680/720 = 648 + 1680/720 = 2328/720
2328/720 simplified gives 97/30
So, 72/80 + 21/9 = 97/30
In mixed form: 37/30

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