7=x+-4

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Solution for 7=x+-4 equation: 



7=x+-4

We move all terms to the left:

7-(x+-4)=0

We add all the numbers together, and all the variables

-(x-4)+7=0

We get rid of parentheses

-x+4+7=0

We add all the numbers together, and all the variables

-1x+11=0

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

-x=-11

x=-11/-1

x=+11

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