-28x+20x=4(-9-3x)

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Solution for -28x+20x=4(-9-3x) equation: 



-28x+20x=4(-9-3x)

We move all terms to the left:

-28x+20x-(4(-9-3x))=0

We add all the numbers together, and all the variables

-28x+20x-(4(-3x-9))=0

We add all the numbers together, and all the variables

-8x-(4(-3x-9))=0



We calculate terms in parentheses: -(4(-3x-9)), so:

4(-3x-9)

We multiply parentheses

-12x-36

Back to the equation:

-(-12x-36)



We get rid of parentheses

-8x+12x+36=0

We add all the numbers together, and all the variables

4x+36=0

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

4x=-36

x=-36/4

x=-9

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