When 5 is subtracted by twice a number ,7 is obtained , Find the number.

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Solution

Let the number be $x$
From the given condition
$5 - 2 x = 7 ⟹ x = - 1$

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When 5 is subtracted by twice a number ,7 is obtained , Find the number.

Let the number be xFrom the given condition 5−2x=7⟹x=−1

Let the number be $x$
From the given condition
$5 - 2 x = 7 ⟹ x = - 1$