How do you solve for x in this equation 2x+4-10x = 20?

1 Answer
Jun 9, 2017

See a solution process below:

Explanation:

First, group and combine like terms on the left side of the equation:

2x + 4 - 10x = 20

2x - 10x + 4 = 20

(2 - 10)x + 4 = 20

-8x + 4 = 20

Next, subtract color(red)(4) from each side of the equation to isolate the x term:

-8x + 4 - color(red)(4) = 20 - color(red)(4)

-8x + 0 = 16

-8x = 16

Now, divide each side of the equation by color(red)(-8) to solve for x while keeping the equation balanced:

(-8x)/color(red)(-8) = 16/color(red)(-8)

(color(red)(cancel(color(black)(-8)))x)/cancel(color(red)(-8)) = -2

x = -2