Question

By what rational number should we multiply 20/−9 , so that the product may be −5/9 ?

Answer 1

Answer:

your answer will ne -100/81

Step-by-step explanation:

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Answer 2

Answer:

$let \: number \: be \: x \\ x \times \frac{20}{ - 9} = \frac{ - 5}{9} \\ x = \frac{ - 5}{9} \div \frac{20}{ - 9} \\ x = \frac{ - 5}{9} \times \frac{ - 9}{20} \\ x = \frac{ - 1}{1} \times \frac{ - 1}{4} \\ x = \frac{ - 1}{ - 4}$