document.write( "Question 167542: Solve by elimination method:
\n" ); document.write( "5x+5y= -13
\n" ); document.write( "7x-3y= 17 \n" ); document.write( "

Algebra.Com's Answer #123441 by aswathytony(47) $\"\"$ $\"About$

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5x + 5y = -13 .......(1)\r
\n" ); document.write( "\n" ); document.write( "7x - 3y = 17 ............(2)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(1) * 3 & (2) * 5 \r
\n" ); document.write( "\n" ); document.write( " 5x * 3 + 5y * 3 = -13* 3
\n" ); document.write( " 15 x + 15 y = - 39 ............(3)\r
\n" ); document.write( "\n" ); document.write( "7x * 5 - 3y * 5 = 17 *5
\n" ); document.write( " 35 x - 15 y = 85 ..........(4)\r
\n" ); document.write( "\n" ); document.write( "(3) + (4)\r
\n" ); document.write( "\n" ); document.write( " 50x = 46
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( " x = 46 /50 = 0.92 \r
\n" ); document.write( "\n" ); document.write( "substituting x =0.92 in (1)\r
\n" ); document.write( "\n" ); document.write( " 5 * 0.92 + 5y = -13
\n" ); document.write( " 4.6 + 5y = -13 \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " 5y = -13 - 4.6 = -17.6
\n" ); document.write( " y = -17.6 / 5 = -3.52 \n" ); document.write( "

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