document.write( "Question 970254: What is the solution set of:\r
\n" );
document.write( "\n" );
document.write( "x - 4y = 8\r
\n" );
document.write( "\n" );
document.write( "y = -5x + 7\r
\n" );
document.write( "\n" );
document.write( "Thank you! \n" );
document.write( "
Algebra.Com's Answer #592912 by thesvw(77)![]() ![]() You can put this solution on YOUR website! x - 4y = 8 \n" ); document.write( "y = -5x + 7\r \n" ); document.write( "\n" ); document.write( "Substitute y to the first equation. \r \n" ); document.write( "\n" ); document.write( "x -4(-5x+7) =8\r \n" ); document.write( "\n" ); document.write( "x +20x -28 =8 \n" ); document.write( "21x = 36\r \n" ); document.write( "\n" ); document.write( "x= 36/21\r \n" ); document.write( "\n" ); document.write( "Substitute this x value to second equation to find the y value. \n" ); document.write( " |