document.write( "Question 562141: how do i do this problem? y=2x, x+y=12 \n" ); document.write( "
Algebra.Com's Answer #364456 by TutorDelphia(193) You can put this solution on YOUR website! since we know y=2x I can plug in 2x anywhere I see a y\r \n" ); document.write( "\n" ); document.write( "x+2x=12 \n" ); document.write( "combine like terms \n" ); document.write( "3x=12 \n" ); document.write( "divide both sides by 3 \n" ); document.write( "x=4\r \n" ); document.write( "\n" ); document.write( "plug 4 in for x \n" ); document.write( "y=2*4 \n" ); document.write( "y=8 \n" ); document.write( " |