Algebra Examples

$x = 2$ : $f (x) = 7 x - 5$

Step 1

Replace the variable $x$ with $2$ in the expression.

$f (2) = 7 (2) - 5$

Step 2

Simplify the result.

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Step 2.1

Multiply $7$ by $2$ .

$f (2) = 14 - 5$

Step 2.2

Subtract $5$ from $14$ .

$f (2) = 9$

Step 2.3

The final answer is $9$ .

$9$

Step 3