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x(.8)=676
We move all terms to the left:
x(.8)-(676)=0
We add all the numbers together, and all the variables
x(0.8)-676=0
We multiply parentheses
0.8x-676=0
We move all terms containing x to the left, all other terms to the right
0.8x=676
x=676/0.8
x=845
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