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0.02x+0.03(11000-x)=290
We move all terms to the left:
0.02x+0.03(11000-x)-(290)=0
We add all the numbers together, and all the variables
0.02x+0.03(-1x+11000)-290=0
We multiply parentheses
0.02x-0.03x+330-290=0
We add all the numbers together, and all the variables
-0.01x+40=0
We move all terms containing x to the left, all other terms to the right
-0.01x=-40
x=-40/-0.01
x=+4000
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