-7(4=x)=28

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Solution for -7(4=x)=28 equation: 



-7(4=x)=28

We move all terms to the left:

-7(4-(x))=0

We add all the numbers together, and all the variables

-7(-1x+4)=0

We multiply parentheses

7x-28=0

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

7x=28

x=28/7

x=4

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