-20=5(x-7)-8x

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Solution for -20=5(x-7)-8x equation: 



-20=5(x-7)-8x

We move all terms to the left:

-20-(5(x-7)-8x)=0



We calculate terms in parentheses: -(5(x-7)-8x), so:

5(x-7)-8x

We add all the numbers together, and all the variables

-8x+5(x-7)

We multiply parentheses

-8x+5x-35

We add all the numbers together, and all the variables

-3x-35

Back to the equation:

-(-3x-35)



We get rid of parentheses

3x+35-20=0

We add all the numbers together, and all the variables

3x+15=0

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

3x=-15

x=-15/3

x=-5

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