Solve 4x+2y=42

$$4 x + 2 y = 42$$

Solve for x

$$x=\frac{21-y}{2}$$

Steps for Solving Linear Equation

Subtract 2y from both sides.

$$4x=42-2y$$

Divide both sides by 4.

$$\frac{4x}{4}=\frac{42-2y}{4}$$

Dividing by 4 undoes the multiplication by 4.

$$x=\frac{42-2y}{4}$$

Divide 42-2y by 4.

$$x=\frac{21-y}{2}$$

Solve for y

$$y=21-2x$$

Steps for Solving Linear Equation

Subtract 4x from both sides.

$$2y=42-4x$$

Divide both sides by 2.

$$\frac{2y}{2}=\frac{42-4x}{2}$$

Dividing by 2 undoes the multiplication by 2.

$$y=\frac{42-4x}{2}$$

Divide 42-4x by 2.

$$y=21-2x$$