10x+5(x/4)+2(x/8)+1(x/16)=555
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10x+5(x/4+2(x/8)+1(x/16)=555
10x+5x/20+10+2x/16+1x/16=555
10x+5x+2x+1x(20+10)16/16=555
18x(30)1=555
18x(30)=555
18x=555/30
18x=18.5
x=18.5/18
x=1.20
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