x+84=x(1.21)

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Solution for x+84=x(1.21) equation: 



x+84=x(1.21)

We move all terms to the left:

x+84-(x(1.21))=0



We calculate terms in parentheses: -(x(1.21)), so:

x(1.21)

We multiply parentheses

1.21x

Back to the equation:

-(1.21x)



We add all the numbers together, and all the variables

x-(+1.21x)+84=0

We get rid of parentheses

x-1.21x+84=0

We add all the numbers together, and all the variables

-0.21x+84=0

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

-0.21x=-84

x=-84/-0.21

x=+400

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