If $x = - 3$ , find the value of:
$2 x - 3$

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Solution

Let us substitute $x = - 3$ in the given expression $2 x - 3$ as shown below:

$2 x - 3 = [2 \times (- 3)] - 3 = - 6 - 3 = - 9$

Hence, $2 x - 3 = - 9$ if $x = - 3$ .

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