x:(2x-1)=0.52
x:(2x-1)=0.52 |*(2x-1)
x=0.52(2x-1)
x=1.04x-0.52
x-1.04x=-0.52
-0.04x=-0.52
x=0.52/0.04=13.
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x:(2x-1)=0.52
x:(2x-1)=0.52 |*(2x-1)
x=0.52(2x-1)
x=1.04x-0.52
x-1.04x=-0.52
-0.04x=-0.52
x=0.52/0.04=13.