Add 21/80 and 84/10
1st number: 21/80, 2nd number: 8 4/10
21/80 + 84/10 is 693/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
21/80 = 21 × 1/80 × 1 = 21/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
84/10 = 84 × 8/10 × 8 = 672/80 - Add the two like fractions:
21/80 + 672/80 = 21 + 672/80 = 693/80 - So, 21/80 + 84/10 = 693/80
In mixed form: 853/80
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