Finite Math Examples

$- x + 2 = - 2 x + 8$

Step 1

Move all terms containing $x$ to the left side of the equation.

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Step 1.1

Add $2 x$ to both sides of the equation.

$- x + 2 + 2 x = 8$

Step 1.2

Add $- x$ and $2 x$ .

$x + 2 = 8$

Step 2

Move all terms not containing $x$ to the right side of the equation.

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Step 2.1

Subtract $2$ from both sides of the equation.

$x = 8 - 2$

Step 2.2

Subtract $2$ from $8$ .

$x = 6$

Step 3

Since the equation can be written in the form $y = k x$ , $y$ varies directly with $x$ and $k$ . The constant of variation, $k$ , is $6$ .

$6$