7-x=x-9

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Solution for 7-x=x-9 equation: 



7-x=x-9

We move all terms to the left:

7-x-(x-9)=0

We add all the numbers together, and all the variables

-1x-(x-9)+7=0

We get rid of parentheses

-1x-x+9+7=0

We add all the numbers together, and all the variables

-2x+16=0

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

-2x=-16

x=-16/-2

x=+8

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