Add 72/9 and 21/80
1st number: 8 0/9, 2nd number: 21/80
72/9 + 21/80 is 661/80.
Steps for adding fractions
- 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,
72/9 = 72 × 80/9 × 80 = 5760/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
21/80 = 21 × 9/80 × 9 = 189/720 - Add the two like fractions:
5760/720 + 189/720 = 5760 + 189/720 = 5949/720 - 5949/720 simplified gives 661/80
- So, 72/9 + 21/80 = 661/80
In mixed form: 821/80
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