document.write( "Question 271363: Solve for X and Y in the following problems using either substitution or elimination methods. X + Y = 10, 3X + Y = 12 \n" ); document.write( "
Algebra.Com's Answer #198715 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 3X+Y=12 \n" ); document.write( "-(X+Y=10) \n" ); document.write( "---------------- \n" ); document.write( "2X=2 \n" ); document.write( "X=2/2 \n" ); document.write( "X=1 ANS. \n" ); document.write( "3*1+Y=12 \n" ); document.write( "3+Y=12 \n" ); document.write( "Y=12-3 \n" ); document.write( "Y=9 ANS. \n" ); document.write( "PROOF: \n" ); document.write( "1+9=10 \n" ); document.write( "10=10 \n" ); document.write( " \n" ); document.write( " |