document.write( "Question 585183: 0.3x-0.2y=4
\n" );
document.write( "0.5x+0.5y=-45/17\r
\n" );
document.write( "\n" );
document.write( "3x-2y=40
\n" );
document.write( "5x+5y=-450/17
\n" );
document.write( "15x-10y=200
\n" );
document.write( "15x-15y=1350/17
\n" );
document.write( "_________________
\n" );
document.write( " -25y= 4750/17 dont know how they got this?
\n" );
document.write( " y=-190/17
\n" );
document.write( "3x-2(-190/17)=40
\n" );
document.write( "100/17
\n" );
document.write( "Solution 100/17,-190/17 \n" );
document.write( "
Algebra.Com's Answer #373192 by stanbon(75887) ![]() You can put this solution on YOUR website! 0.3x-0.2y = 4 \n" ); document.write( "0.5x+0.5y = -45/17 \n" ); document.write( "------------------------ \n" ); document.write( "3x-2y= 40 \n" ); document.write( "5x+5y= -450/17 \n" ); document.write( "-------------------- \n" ); document.write( "15x-10y= 200 \n" ); document.write( "15x+15y= -1350/17 \n" ); document.write( "________________ \n" ); document.write( "Add those two equation together to get: \n" ); document.write( "5y= 2050/17 \n" ); document.write( "--------------------------------- \n" ); document.write( "y = 410/17 \n" ); document.write( "Solve for \"x\": \n" ); document.write( "------------------------- \n" ); document.write( "3x-2(410/17)=40 \n" ); document.write( "3x - 820/17 = 680/17 \n" ); document.write( "3x = 1500/17 \n" ); document.write( "x = 500/17 \n" ); document.write( "===================== \n" ); document.write( "Solution 500/17 , 410/17 \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "======================== \n" ); document.write( " \n" ); document.write( " |