28-8x=21+x

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Solution for 28-8x=21+x equation: 



28-8x=21+x

We move all terms to the left:

28-8x-(21+x)=0

We add all the numbers together, and all the variables

-8x-(x+21)+28=0

We get rid of parentheses

-8x-x-21+28=0

We add all the numbers together, and all the variables

-9x+7=0

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

-9x=-7

x=-7/-9

x=7/9

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