document.write( "Question 93352: If 2x + y = 12 and x + 2y = -6 what is the value of 2x + 2y? \n" ); document.write( "
Algebra.Com's Answer #67975 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! 2X+Y=12 NOW MULTIPLY THE SECOND EQUATION BY -2 & ADD THEM: \n" ); document.write( "-2X-4Y=12 \n" ); document.write( "-------------------------------- \n" ); document.write( "-3Y=24 \n" ); document.write( "Y=24/-3 \n" ); document.write( "Y=-8 ANSWER. \n" ); document.write( "2X-8=12 \n" ); document.write( "2X=12+8 \n" ); document.write( "X=20/2 \n" ); document.write( "X=10 ANSWER. \n" ); document.write( "SO 2X+2Y=2*10+2*-8=20-16=4 \n" ); document.write( " |