1+7=28+x

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Solution for 1+7=28+x equation: 



1+7=28+x

We move all terms to the left:

1+7-(28+x)=0

We add all the numbers together, and all the variables

-(x+28)+1+7=0

We add all the numbers together, and all the variables

-(x+28)+8=0

We get rid of parentheses

-x-28+8=0

We add all the numbers together, and all the variables

-1x-20=0

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

-x=20

x=20/-1

x=-20

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