document.write( "Question 197425: solve the proportion
\n" );
document.write( "5/ x-1= 7/x \n" );
document.write( "
Algebra.Com's Answer #148048 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " |