-7x+28=21

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Solution for -7x+28=21 equation: 



-7x+28=21

We move all terms to the left:

-7x+28-(21)=0

We add all the numbers together, and all the variables

-7x+7=0

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

-7x=-7

x=-7/-7

x=1

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