Question

3x+6y=18 solve for x

Answer 1

First subtract 6y from both sides of the equation.

$3x+6y-6y=18-6y\Longrightarrow 3x=18-6y$

Then divide both sides of the equation with 3.

$3x=18-6y\Longrightarrow x=\dfrac{18-6y}{3}$

Which further simplifies to.

$x=\dfrac{18}{3}-\dfrac{6y}{3}\Longrightarrow\boxed{6-2y}$

Hope this helps. I tried to made the steps very clear and easy.

r3t40

Answer 2

3x+6y=18

then

3x+6y+−6y=18+−6y

next

3x=−6y+18

then

3x /3 =( −6y+18) /3

answer

x=−2y+6