Subtract 20/21 from 84/10
1st number: 8 4/10, 2nd number: 20/21
84/10 - 20/21 is 782/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
84/10 = 84 × 21/10 × 21 = 1764/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
20/21 = 20 × 10/21 × 10 = 200/210 - Subtract the two like fractions:
1764/210 - 200/210 = 1764 - 200/210 = 1564/210 - After reducing the fraction, the answer is 782/105
- In mixed form: 747/105
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