Pre-Algebra Examples

$396 = x + 2 \cdot x \cdot 4$

Step 1

Rewrite the equation as $x + 2 \cdot x \cdot 4 = 396$ .

$x + 2 \cdot x \cdot 4 = 396$

Step 2

Simplify $x + 2 \cdot x \cdot 4$ .

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Step 2.1

Multiply $4$ by $2$ .

$x + 8 x = 396$

Step 2.2

Add $x$ and $8 x$ .

$9 x = 396$

Step 3

Divide each term in $9 x = 396$ by $9$ and simplify.

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Step 3.1

Divide each term in $9 x = 396$ by $9$ .

$\frac{9 x}{9} = \frac{396}{9}$

Step 3.2

Simplify the left side.

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Step 3.2.1

Cancel the common factor of $9$ .

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Step 3.2.1.1

Cancel the common factor.

$\frac{9 x}{9} = \frac{396}{9}$

Step 3.2.1.2

Divide $x$ by $1$ .

$x = \frac{396}{9}$

Step 3.3

Simplify the right side.

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Step 3.3.1

Divide $396$ by $9$ .

$x = 44$