document.write( "Question 230903: I am really having hard time with linear equation systems and understanding how to solve them this problem is another one.\r
\n" ); document.write( "\n" ); document.write( "0.2x + 0.4y = 1.7 and 8.3x - 6.3y = -4.3 \n" ); document.write( "
Algebra.Com's Answer #171010 by checkley77(12844)\"\" \"About 
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0.2x + 0.4y = 1.7
\n" ); document.write( ".4Y=-.2X+1.7
\n" ); document.write( "Y=-.2X/.4+1.7/.4
\n" ); document.write( "Y=-.5X+4.25 (RED LINE)
\n" ); document.write( "8.3x - 6.3y = -4.3
\n" ); document.write( "-6.3Y=-8.3X-4.3
\n" ); document.write( "Y=-8.3X/-5.3-4.3/-6.3
\n" ); document.write( "Y=1.566X+.68254 (GREEN LINE)
\n" ); document.write( "\"+graph%28+300%2C+300%2C+-6%2C+8%2C+-6%2C+8%2C+-.5x+%2B4.25%2C+1.566x+%2B.68254%29+\" (graph 300x200 pixels, x from -6 to 8, y from -6 to 8, of TWO functions -.5x +4.25 and 1.566x +.68254).
\n" ); document.write( "-------------------------
\n" ); document.write( "0.2x + 0.4y = 1.7 MULTIPLY THIS EQUATION BY 6.3.
\n" ); document.write( "8.3x - 6.3y = -4.3 MULTIPLY THIS EQUATION BY .4 & ADD THEM.
\n" ); document.write( "1.26X+2.52Y=10.71
\n" ); document.write( "3.32X+-2.52Y=-1.72
\n" ); document.write( "-----------------------
\n" ); document.write( "4.58X=8.99
\n" ); document.write( "X=8.99/4.58
\n" ); document.write( "X=1.963 ANS.
\n" ); document.write( ".2*1.963+.4Y=1.7
\n" ); document.write( ".3926+.4Y=1.7
\n" ); document.write( ".4Y=1.7-.3926
\n" ); document.write( ".4Y=1.3074
\n" ); document.write( "Y=1.0374/.4
\n" ); document.write( "Y=3.2685 ANS.
\n" ); document.write( "SOLUTION (1.963,3.2685)
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