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0.08(x-3000)=4080
We move all terms to the left:
0.08(x-3000)-(4080)=0
We multiply parentheses
0.08x-240-4080=0
We add all the numbers together, and all the variables
0.08x-4320=0
We move all terms containing x to the left, all other terms to the right
0.08x=4320
x=4320/0.08
x=54000
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