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0.40(x-800)+66.99=171.39
We move all terms to the left:
0.40(x-800)+66.99-(171.39)=0
We add all the numbers together, and all the variables
0.40(x-800)-104.4=0
We multiply parentheses
0.4x-320-104.4=0
We add all the numbers together, and all the variables
0.4x-424.4=0
We move all terms containing x to the left, all other terms to the right
0.4x=424.4
x=424.4/0.4
x=1060+0.4/0.4
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