Solve 2x-y=4

$$2 x - y = 4$$

Solve for x

$$x=\frac{y+4}{2}$$

Steps for Solving Linear Equation

Add y to both sides.

$$2x=4+y$$

The equation is in standard form.

$$2x=y+4$$

Divide both sides by 2.

$$\frac{2x}{2}=\frac{y+4}{2}$$

Dividing by 2 undoes the multiplication by 2.

$$x=\frac{y+4}{2}$$

Divide 4+y by 2.

$$x=\frac{y}{2}+2$$

Solve for y

$$y=2\left(x-2\right)$$

Steps for Solving Linear Equation

Subtract 2x from both sides.

$$-y=4-2x$$

Divide both sides by -1.

$$\frac{-y}{-1}=\frac{4-2x}{-1}$$

Dividing by -1 undoes the multiplication by -1.

$$y=\frac{4-2x}{-1}$$

Divide 4-2x by -1.

$$y=2x-4$$