The product of a number and -7/10 is 1/2 what is the number-7/207/20-5/75/7

C B asked Feb 10, 2023

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C B asked Feb 10, 2023

by C B

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6 votes

Given data:

The product of a nummber and -7/10 is 1/2.

The given expression can be written as,

$\begin{gathered} ((-7)/(10))(a)=(1)/(2) \\ a=-(10)/(14) \\ =-(5)/(7) \end{gathered}$

Thus, the first unknown number is -5/7, so third option is correct.

Lisyarus answered Feb 13, 2023

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