document.write( "Question 327036: y=2x+16 2x-5y=-16 need to find what is x and y \n" ); document.write( "
Algebra.Com's Answer #234191 by mananth(16946) You can put this solution on YOUR website! y=2x+16 \n" ); document.write( "add -2x to both sides \n" ); document.write( "y-2x=2x-2x+16 \n" ); document.write( "y-2x=16 .........1 \n" ); document.write( "2x-5y=-16........2\r \n" ); document.write( "\n" ); document.write( ".. \n" ); document.write( "multiply equation 1 by 5 and add equation 2 to it \n" ); document.write( "5y-10x=80 \n" ); document.write( "2x-5y=-16 \n" ); document.write( "add them \n" ); document.write( "2x-10x=80+16 \n" ); document.write( "-8x=96 \n" ); document.write( "divide by -8 \n" ); document.write( "-8x/-8=96/-8 \n" ); document.write( "x=-12 \n" ); document.write( "plug the value of x in the equation 1 \n" ); document.write( "y-(-12)(2)=16 \n" ); document.write( "y+24=16 \n" ); document.write( "add -24 on both sides \n" ); document.write( "y+24-24=16-24 \n" ); document.write( "y=-8 \n" ); document.write( " |