21+8x=4(2-2x)-3

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Solution for 21+8x=4(2-2x)-3 equation: 



21+8x=4(2-2x)-3

We move all terms to the left:

21+8x-(4(2-2x)-3)=0

We add all the numbers together, and all the variables

8x-(4(-2x+2)-3)+21=0



We calculate terms in parentheses: -(4(-2x+2)-3), so:

4(-2x+2)-3

We multiply parentheses

-8x+8-3

We add all the numbers together, and all the variables

-8x+5

Back to the equation:

-(-8x+5)



We get rid of parentheses

8x+8x-5+21=0

We add all the numbers together, and all the variables

16x+16=0

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

16x=-16

x=-16/16

x=-1

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