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450=x-(.2)x
We move all terms to the left:
450-(x-(.2)x)=0
We add all the numbers together, and all the variables
-(x-(0.2)x)+450=0
We calculate terms in parentheses: -(x-(0.2)x), so:We add all the numbers together, and all the variables
x-(0.2)x
We multiply parentheses
x-0.2x
We add all the numbers together, and all the variables
0.8x
Back to the equation:
-(0.8x)
-(+0.8x)+450=0
We get rid of parentheses
-0.8x+450=0
We move all terms containing x to the left, all other terms to the right
-0.8x=-450
x=-450/-0.8
x=562+0.4/0.8
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