x+7x=8x+28-4x

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Solution for x+7x=8x+28-4x equation: 



x+7x=8x+28-4x

We move all terms to the left:

x+7x-(8x+28-4x)=0

We add all the numbers together, and all the variables

x+7x-(4x+28)=0

We add all the numbers together, and all the variables

8x-(4x+28)=0

We get rid of parentheses

8x-4x-28=0

We add all the numbers together, and all the variables

4x-28=0

We move all terms containing x to the left, all other terms to the right

4x=28

x=28/4

x=7

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