7x+20=-5(-7-5x)-3x

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Solution for 7x+20=-5(-7-5x)-3x equation: 



7x+20=-5(-7-5x)-3x

We move all terms to the left:

7x+20-(-5(-7-5x)-3x)=0

We add all the numbers together, and all the variables

7x-(-5(-5x-7)-3x)+20=0



We calculate terms in parentheses: -(-5(-5x-7)-3x), so:

-5(-5x-7)-3x

We add all the numbers together, and all the variables

-3x-5(-5x-7)

We multiply parentheses

-3x+25x+35

We add all the numbers together, and all the variables

22x+35

Back to the equation:

-(22x+35)



We get rid of parentheses

7x-22x-35+20=0

We add all the numbers together, and all the variables

-15x-15=0

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

-15x=15

x=15/-15

x=-1

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