Algebra Examples

$f (x) = x + 3$ , $G (x) = x - 3$

Step 1

Replace the function designators with the actual functions in $f (x) + G (x)$ .

$x + 3 + x - 3$

Step 2

Simplify.

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Step 2.1

Combine the opposite terms in $x + 3 + x - 3$ .

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Step 2.1.1

Subtract $3$ from $3$ .

$x + x + 0$

Step 2.1.2

Add $x + x$ and $0$ .

$x + x$

Step 2.2

Add $x$ and $x$ .

$2 x$