.8(12+x)=(20+x)

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Solution for .8(12+x)=(20+x) equation: 



.8(12+x)=(20+x)

We move all terms to the left:

.8(12+x)-((20+x))=0

We add all the numbers together, and all the variables

.8(x+12)-((x+20))=0

We multiply parentheses

0.8x-((x+20))+9.6=0



We calculate terms in parentheses: -((x+20)), so:

(x+20)

We get rid of parentheses

x+20

Back to the equation:

-(x+20)



We get rid of parentheses

0.8x-x-20+9.6=0

We add all the numbers together, and all the variables

-0.2x-10.4=0

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

-0.2x=10.4

x=10.4/-0.2

x=-52

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