document.write( "Question 7336: find the value of m such that this question have no solutions:\r
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document.write( "3x-my=4
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document.write( "x+y=12 \n" );
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Algebra.Com's Answer #4070 by ichudov(507)![]() ![]() You can put this solution on YOUR website! that's a great problem. Start solving this system a little bit, it will help. Subtract 3 times the bottom equation, from top equation:\r \n" ); document.write( "\n" ); document.write( "3x-my - 3(x+y) = 4-3*12 \n" ); document.write( "-my-3y = -32\r \n" ); document.write( "\n" ); document.write( "remove minuses just to make it more readable\r \n" ); document.write( "\n" ); document.write( "my+3y = 32\r \n" ); document.write( "\n" ); document.write( "the value of m that makes this equation impossible (no solutions) is such am that makes the equation 0=32. 0=32 is an impossible equation.\r \n" ); document.write( "\n" ); document.write( "-3 looks pretty good:\r \n" ); document.write( "\n" ); document.write( "-3y+3y=32 is the same as 0 = 32.\r \n" ); document.write( "\n" ); document.write( "so, the answer is m=-3. \n" ); document.write( " |