Solve for x? 8x+20= x+2x-5x?

Question

I know that you have to combine like terms first.

8x+20= -2 what is my next step?

Answer 1

8x+20=x+2x-5x

8x+20=-2x

10x+20=0

10x=20

x=2

(:

Answer 2

8x + 20 = x + 2x - 5x Combine like terms

8x + 20 = -2x Add 2x to both sides

10x + 20 = 0 Factor

10(x + 2) = 0 Zero Product Property

x + 2 = 0 Subtract 2 from both sides

x = -2 (Possible answer)

10

x = 0 (Possible answer)

Substitute your answer back into the original equation to check for any extraneous solutions.

Answer 3

1st:

8x+20=x+2x-5x  ------>     8x+20=3x-5x

8x+20=3x-5x     ------>      8x+20= -2x

2nd:

8x+20= -2x      ------->    8x+2x= -20

10x= -20

(divide both sides by 10 to eliminate  10 in 10x)

                                   [ x= -2 ]

Answer 4

7x+20= -3x

10x= -20

x= -2

Answer 5

8x - x - 2x + 5x + 20 = 0

The next two steps are meant to show you why the left hand side of the equation that follows is 10x + 20.

8x + 5x -x - 2x + 20 = 0

13x - 3x + 20 = 0

10x + 20 = 0

Subtract 20 from both sides of the equation.

10x = -20

Divide both sides of the equation by 10

x = -2   <<<<<  

I substituted -2 for x in the original equation and it does check.

Answer 6

8x+20=x+2x-5x

so 8x+20= -2x

20= -2x -8x

20= -10x

x= -2

Answer 7

it should be 8x+20=-2x then you subtract 8x from -2x and then divide 20 by that number you should get -2=x

Answer 8

Your next step would be to get all like terms on one side. So, get all terms with x's on one side of the equals sign. (the 8x and the -2x).

Jess, you missed a negative sign by the way...

Answer 9

first of all, the first step looks like this

8x + 20 = -2x

then,

8x + 20 = -2x

-8x           -8x

20 = -10x

/-10      /-10

-2 = x

Answer 10

8X+20= -2X

8X+2X = -20

10X = -20

X = -2

Answer 11

8x + 20 = x + 2x - 5x

8x - 2x + 5x - x = -20

10x = -20

x = -20/10

x = -2

Answer 12

8x+20= x+2x-5x

8x + 20 = -2x (you forgot the x)

Subtract 8x from both sides, then divide by the number in front of x.

Good luck to you !!

Answer 13

the first step u have written is wrong

8x+20=-2x

so,10x=-20

and x=-2

Answer 14

you mean 8x+20= -2x...

then you add 2x to each side, which gives you

8x+20+2x=-2x+2x

10x+20=0

then you subtract 20 from each side-->

10x=-20

then divide each side by 10, so you end up with

x=-2

Answer 15

8x+20= x+2x-5x

First thing u should do is to equate it to ZERO

8x+20-x-2x+5x=0 ... combine like terms

8x+20= -2x

10x+20=0

10x = -20

x = -20/10

x = -2 ----> answer