28=x-5-7

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Solution for 28=x-5-7 equation: 



28=x-5-7

We move all terms to the left:

28-(x-5-7)=0

We add all the numbers together, and all the variables

-(x-12)+28=0

We get rid of parentheses

-x+12+28=0

We add all the numbers together, and all the variables

-1x+40=0

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

-x=-40

x=-40/-1

x=+40

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