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x-x(.15)=388
We move all terms to the left:
x-x(.15)-(388)=0
We add all the numbers together, and all the variables
x-x(0.15)-388=0
We multiply parentheses
x-0.15x-388=0
We add all the numbers together, and all the variables
0.85x-388=0
We move all terms containing x to the left, all other terms to the right
0.85x=388
x=388/0.85
x=456+0.4/0.85
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