Solve 42x-2y=4

$$42 x - 2 y = 4$$

Solve for x

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

Steps for Solving Linear Equation

Add 2y to both sides.

$$42x=4+2y$$

The equation is in standard form.

$$42x=2y+4$$

Divide both sides by 42.

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

Dividing by 42 undoes the multiplication by 42.

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

Divide 4+2y by 42.

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

Solve for y

$$y=21x-2$$

Steps for Solving Linear Equation

Subtract 42x from both sides.

$$-2y=4-42x$$

Divide both sides by -2.

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

Dividing by -2 undoes the multiplication by -2.

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

Divide 4-42x by -2.

$$y=21x-2$$