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x=(2x-100)*4
We move all terms to the left:
x-((2x-100)*4)=0
We calculate terms in parentheses: -((2x-100)*4), so:We get rid of parentheses
(2x-100)*4
We multiply parentheses
8x-400
Back to the equation:
-(8x-400)
x-8x+400=0
We add all the numbers together, and all the variables
-7x+400=0
We move all terms containing x to the left, all other terms to the right
-7x=-400
x=-400/-7
x=57+1/7
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