4=289-x

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Solution for 4=289-x equation: 



4=289-x

We move all terms to the left:

4-(289-x)=0

We add all the numbers together, and all the variables

-(-1x+289)+4=0

We get rid of parentheses

1x-289+4=0

We add all the numbers together, and all the variables

x-285=0

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

x=285

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