7x-4=28-x

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



7x-4=28-x

We move all terms to the left:

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

We add all the numbers together, and all the variables

7x-(-1x+28)-4=0

We get rid of parentheses

7x+1x-28-4=0

We add all the numbers together, and all the variables

8x-32=0

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

8x=32

x=32/8

x=4

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