28=9-x

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Solution for 28=9-x equation: 



28=9-x

We move all terms to the left:

28-(9-x)=0

We add all the numbers together, and all the variables

-(-1x+9)+28=0

We get rid of parentheses

1x-9+28=0

We add all the numbers together, and all the variables

x+19=0

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

x=-19

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