document.write( "Question 327664: solve the system by the elimination method
\n" );
document.write( "x+3y=-4
\n" );
document.write( "2x+2y=-1 \n" );
document.write( "
Algebra.Com's Answer #234695 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! solve the system by the elimination method \n" ); document.write( "x+3y=-4 \n" ); document.write( "2x+2y=-1 \n" ); document.write( "--------------- \n" ); document.write( "Multiply thru the 1st by 2: \n" ); document.write( "2x+6y = -8 \n" ); document.write( "2x+2y = -1 \n" ); document.write( "---- \n" ); document.write( "Subtract the 2nd from the 1st and solve for \"y\": \n" ); document.write( "4y = 9 \n" ); document.write( "y= 9/4 \n" ); document.write( "-------- \n" ); document.write( "Substitute into x + 3y = -4 to solve for \"x\": \n" ); document.write( "x + 3(9/4) = -16/4 \n" ); document.write( "x = -(43/4) \n" ); document.write( "=============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============== \n" ); document.write( " |