document.write( "Question 331189: Solve for x. 4x(x-5)-5x(x-4)=-1 \n" ); document.write( "
Algebra.Com's Answer #237405 by vleith(2983)\"\" \"About 
You can put this solution on YOUR website!
\"4x%28x-5%29-5x%28x-4%29=-1\"
\n" ); document.write( "\"4x%5E2+-+20x+-5x%5E2+%2B+20x+=+-1\"
\n" ); document.write( "\"-x%5E2+=+-1\"
\n" ); document.write( "\"x%5E2+=+1\"
\n" ); document.write( "x=1 and x= -1
\n" ); document.write( "Check your answers by pluggin in those 2 values for x, one at a time, and verifying the equality is 'true'
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