X+((x*3.9)*30)=400000

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Solution for X+((x*3.9)*30)=400000 equation: 



X+((X*3.9)*30)=400000

We move all terms to the left:

X+((X*3.9)*30)-(400000)=0

We add all the numbers together, and all the variables

X+((+X*3.9)*30)-400000=0



We calculate terms in parentheses: +((+X*3.9)*30), so:

(+X*3.9)*30

We multiply parentheses

117X

Back to the equation:

+(117X)



We add all the numbers together, and all the variables

118X-400000=0

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

118X=400000

X=400000/118

X=3389+49/59

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