document.write( "Question 259475: x(7x-5)+4=7x(x-4)+x \n" ); document.write( "
Algebra.Com's Answer #190994 by checkley77(12844) ![]() You can put this solution on YOUR website! x(7x-5)+4=7x(x-4)+x \n" ); document.write( "7x^2-5x+4=7x^2-28x+x \n" ); document.write( "7x^2-7x^2-5x+28x-x=-4 \n" ); document.write( "22x=-4 \n" ); document.write( "x=-4/22 \n" ); document.write( "x=-2/11 ans. \n" ); document.write( "Proof: \n" ); document.write( "-2/11(7*-2/11-5)+4=7*-2/11(-2/11-4)-2/11 \n" ); document.write( "-2/11(-14/11-5)+4=-14/11(-2/11-44/11)-2/11 \n" ); document.write( "-2/11(-14/11-55/11)+4=-14/11*-2/11-14/11*-44/11-2/11 \n" ); document.write( "28/121+110/121+484/121=28/121+616/121-22/121 \n" ); document.write( "622/121=622/121 \n" ); document.write( " |