document.write( "Question 1076923: i already know what y is, and I only need to find x,\r
\n" ); document.write( "\n" ); document.write( "{x+cy=d
\n" ); document.write( "{x-dy=c \n" ); document.write( "

Algebra.Com's Answer #691503 by alanc(27) $\"\"$ $\"About$

You can put this solution on YOUR website!
i already know what y is, and I only need to find x,\r
\n" ); document.write( "\n" ); document.write( "{x+cy=d
\n" ); document.write( "{x-dy=c\r
\n" ); document.write( "\n" ); document.write( "if we found y, we can find x.\r
\n" ); document.write( "\n" ); document.write( "I would solve for y by elimination of the x variable.\r
\n" ); document.write( "\n" ); document.write( " (x + cy) = d
\n" ); document.write( "- (x - dy) = -c
\n" ); document.write( "x + cy - x + dy = d - c
\n" ); document.write( "cy + dy = d - c\r
\n" ); document.write( "\n" ); document.write( "y (c + d) = d - c\r
\n" ); document.write( "\n" ); document.write( "y = (d - c) / (d + c)\r
\n" ); document.write( "\n" ); document.write( "ok, x - dy = c,
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\n" ); document.write( "x = c + dy\r
\n" ); document.write( "\n" ); document.write( "x = c + d* (d - c) / (d + c)\r
\n" ); document.write( "\n" ); document.write( "x = c * (d + c)/(d + c) + d*(d - c)/(d + c)\r
\n" ); document.write( "\n" ); document.write( "x = [(cd + c*c) + d*d - cd ] / (d + c)\r
\n" ); document.write( "\n" ); document.write( "x = [c*c + d*d ] / (d + c)\r
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