-20-5x=3(x-4x)

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Solution for -20-5x=3(x-4x) equation: 



-20-5x=3(x-4x)

We move all terms to the left:

-20-5x-(3(x-4x))=0

We add all the numbers together, and all the variables

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



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

3(-3x)

We multiply parentheses

-9x

Back to the equation:

-(-9x)



We get rid of parentheses

-5x+9x-20=0

We add all the numbers together, and all the variables

4x-20=0

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

4x=20

x=20/4

x=5

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