Finite Math Examples

$x - 2 y = 2$ , $2 x - 4 y - 4$

Step 1

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

$x = 2 + 2 y$

Step 2

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

$2 (2 + 2 y) - 4 y - 4$

Step 3

Simplify each term.

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Step 3.1

Apply the distributive property.

$2 \cdot 2 + 2 (2 y) - 4 y - 4$

Step 3.2

Multiply $2$ by $2$ .

$4 + 2 (2 y) - 4 y - 4$

Step 3.3

Multiply $2$ by $2$ .

$4 + 4 y - 4 y - 4$

Step 4

Combine the opposite terms in $4 + 4 y - 4 y - 4$ .

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Step 4.1

Subtract $4 y$ from $4 y$ .

$4 + 0 - 4$

Step 4.2

Add $4$ and $0$ .

$4 - 4$

Step 4.3

Subtract $4$ from $4$ .

$0$