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Sagot :
Change the mixed fractions to improper fractions, then to similar fractions:
As improper fractions:
- Multiply the whole number by the denominator, then add the numerator. The result is the numerator, the denominator is the same.
9/2 - 42/11 = difference
As similar fractions:
- Find the LCD (least common denominator). LCD is (2)(11) = 22
- For each fraction, divide the LCD by the denominator. Multiply the quotient by the numerator. The result is the numerator; re-write as similar fractions.
99/22 - 84/22 = 15/22
The difference of the two fractions is 15/22,
As improper fractions:
- Multiply the whole number by the denominator, then add the numerator. The result is the numerator, the denominator is the same.
9/2 - 42/11 = difference
As similar fractions:
- Find the LCD (least common denominator). LCD is (2)(11) = 22
- For each fraction, divide the LCD by the denominator. Multiply the quotient by the numerator. The result is the numerator; re-write as similar fractions.
99/22 - 84/22 = 15/22
The difference of the two fractions is 15/22,
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