Add 90/9 and 21/80
1st number: 10 0/9, 2nd number: 21/80
90/9 + 21/80 is 821/80.
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,
90/9 = 90 × 80/9 × 80 = 7200/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
21/80 = 21 × 9/80 × 9 = 189/720 - Add the two like fractions:
7200/720 + 189/720 = 7200 + 189/720 = 7389/720 - 7389/720 simplified gives 821/80
- So, 90/9 + 21/80 = 821/80
In mixed form: 1021/80
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