document.write( "Question 293755: solve by any method:\r
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document.write( "5x + 6y =14
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document.write( "-3y+ x =7 \n" );
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Algebra.Com's Answer #211978 by blwinbbbles(106)![]() ![]() You can put this solution on YOUR website! 5x + 6y = 14 and \n" ); document.write( "-3y + x = 7\r \n" ); document.write( "\n" ); document.write( "I think substitution would be the easiest\r \n" ); document.write( "\n" ); document.write( "so let's rearrange -3y + x = 7 so add 3y to both sides\r \n" ); document.write( "\n" ); document.write( "x = 3y + 7 now substitute into the first equation and solve\r \n" ); document.write( "\n" ); document.write( "5(3y + 7) + 6y = 14 \n" ); document.write( "15y + 35 + 6y = 14 \n" ); document.write( "21y + 35 = 14 subtract 35 from both sides \n" ); document.write( "21y = -21 divide by 21 \n" ); document.write( "y = -1\r \n" ); document.write( "\n" ); document.write( "Now we know y = -1 use the first equation again and use -1 for y \n" ); document.write( " 5x + 6(-1) = 14 \n" ); document.write( "5x - 6 = 14 add 6 to both sides \n" ); document.write( "5x = 20 divide by 5 \n" ); document.write( "x = 4\r \n" ); document.write( "\n" ); document.write( "so now you have your cordinate (4, -1) \n" ); document.write( " |