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x-x(.43)=399.99
We move all terms to the left:
x-x(.43)-(399.99)=0
We add all the numbers together, and all the variables
x-x(0.43)-(399.99)=0
We add all the numbers together, and all the variables
x-x(0.43)-399.99=0
We multiply parentheses
x-0.43x-399.99=0
We add all the numbers together, and all the variables
0.57x-399.99=0
We move all terms containing x to the left, all other terms to the right
0.57x=399.99
x=399.99/0.57
x=701+0.42000000000002/0.57
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