100=x+(0.8x)

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Solution for 100=x+(0.8x) equation: 



100=x+(0.8x)

We move all terms to the left:

100-(x+(0.8x))=0

We add all the numbers together, and all the variables

-(x+(+0.8x))+100=0



We calculate terms in parentheses: -(x+(+0.8x)), so:

x+(+0.8x)

We get rid of parentheses

x+0.8x

We add all the numbers together, and all the variables

1.8x

Back to the equation:

-(1.8x)



We add all the numbers together, and all the variables

-(+1.8x)+100=0

We get rid of parentheses

-1.8x+100=0

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

-1.8x=-100

x=-100/-1.8

x=55+1/1.8

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