document.write( "Question 469453: Can someone Please help me?\r
\n" );
document.write( "\n" );
document.write( "Solved by the substitution method\r
\n" );
document.write( "\n" );
document.write( "6x+2y=-46
\n" );
document.write( "-7x+y=57 \n" );
document.write( "
Algebra.Com's Answer #322210 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Solve by the substitution method \n" ); document.write( "6x + 2y =-46 \n" ); document.write( "-7x+ y = 57 \n" ); document.write( ": \n" ); document.write( "Use the 2nd equation for substitution in the 1st equation \n" ); document.write( "-7x + y = 57 \n" ); document.write( "y = 7x + 57 \n" ); document.write( ": \n" ); document.write( "Replace y with (7x+57) in the 1st equation \n" ); document.write( "6x + 2(7x+57) = -46 \n" ); document.write( "6x + 14x + 114 = -46 \n" ); document.write( "6x + 14x = -46 - 114 \n" ); document.write( "20x = -160 \n" ); document.write( "x = \n" ); document.write( "x = -8 \n" ); document.write( ": \n" ); document.write( "Find y, substitute -8 for x in: y = 7x + 57 \n" ); document.write( "y = 7(-8) + 57 \n" ); document.write( "y = -56 + 57 \n" ); document.write( "y = 1 \n" ); document.write( ": \n" ); document.write( "Check solutions in the 1st equation: 6x + 2y =-46 \n" ); document.write( "6(-8) + 2(1) = \n" ); document.write( "-48 + 2 = -46, confirms our solutions of x=-8, y=1 \n" ); document.write( " |