4=20-8x

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Solution for 4=20-8x equation: 



4=20-8x

We move all terms to the left:

4-(20-8x)=0

We add all the numbers together, and all the variables

-(-8x+20)+4=0

We get rid of parentheses

8x-20+4=0

We add all the numbers together, and all the variables

8x-16=0

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

8x=16

x=16/8

x=2

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