document.write( "Question 197425: solve the proportion
\n" ); document.write( "5/ x-1= 7/x
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Algebra.Com's Answer #148048 by checkley77(12844)\"\" \"About 
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5/ x-1= 7/x cross multiply
\n" ); document.write( "7(x-1)=5x
\n" ); document.write( "7x-7=5x
\n" ); document.write( "7x-5x=7
\n" ); document.write( "2x=7
\n" ); document.write( "x=7/2
\n" ); document.write( "x=3.5 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "5/(3.5-1)=7/3.5
\n" ); document.write( "5/2.5=2
\n" ); document.write( "2=2
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