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If (x-1) / x =20 , then x=

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User Adavea
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( x-1 )/(x) =20 \\ \\ x\\eq 0\\ \\20x=x-1\\ \\20x - x = -1\\ \\19x = -1 \ \ / :19 \\ \\x= -(1)/(19)
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User SenK
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