20=-5(4x+2)+21x=

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Solution for 20=-5(4x+2)+21x= equation: 



20=-5(4x+2)+21x=

We move all terms to the left:

20-(-5(4x+2)+21x)=0



We calculate terms in parentheses: -(-5(4x+2)+21x), so:

-5(4x+2)+21x

We add all the numbers together, and all the variables

21x-5(4x+2)

We multiply parentheses

21x-20x-10

We add all the numbers together, and all the variables

x-10

Back to the equation:

-(x-10)



We get rid of parentheses

-x+10+20=0

We add all the numbers together, and all the variables

-1x+30=0

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

-x=-30

x=-30/-1

x=+30

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