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What is 3x+2x-8=x-10

 Sep 27, 2019

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 #2
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What is 3x+2x-8=x-10     

 

LunaMoon, when you added 8 to both sides, you overlooked that the –10 was negative.

 

                                             3x + 2x – 8  =  x – 10

combine terms on the left       5x – 8  =  x – 10

add 8 to both sides                  5x       =  x – 2

subtract x from both sides         4x      =  –2

divide both sides by 4                 x       =  –2/4

reduce the fraction 2/4 to 1/2      x  =  –1/2   

.

 Sep 27, 2019
 #1
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-3

3x+2x-8=x-10

5x-8=x-10

-x        -x

4x-8=-10

    +8  +8

4x=18

4/4=18/4

4.5

I think that might be right

 Sep 27, 2019
 #2
avatar
+1
Best Answer

 

What is 3x+2x-8=x-10     

 

LunaMoon, when you added 8 to both sides, you overlooked that the –10 was negative.

 

                                             3x + 2x – 8  =  x – 10

combine terms on the left       5x – 8  =  x – 10

add 8 to both sides                  5x       =  x – 2

subtract x from both sides         4x      =  –2

divide both sides by 4                 x       =  –2/4

reduce the fraction 2/4 to 1/2      x  =  –1/2   

.

Guest Sep 27, 2019

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