document.write( "Question 94042: I am having trouble with solving by substitution. Please help.\r
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Algebra.Com's Answer #854639 by MathTherapy(10849) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "I am having trouble with solving by substitution. Please help.\r\n" );
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document.write( "5x-2y=-5\r\n" );
document.write( "y-5x=3\r\n" );
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document.write( "How is it possible for the following solutions by the other person, to be correct?\r\n" );
document.write( "\"So the solution is, x = 1 and y = 8\"\r\n" );
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document.write( "If these \"respondents\" are not committed to helping these people by correctly solving these problems, then just leave them\r\n" );
document.write( "alone, and move ALONG!! Obviously, they're not helping, but compounding these people's problems with math, making it\r\n" );
document.write( "worse for those who desperately need help, and are expecting to get GENUINE, NOT SUBSTANDARD help. \r\n" );
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document.write( "And, how can the \"respondent\" ask the question, \"Hope you found the explanation useful,\" when it's filled with MANY ERRORS,\r\n" );
document.write( "and the solutions prove the equations FALSE, therefore making the solutions, obviously BOGUS?\r\n" );
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document.write( "                  5x - 2y = - 5 ---- eq (i)\r\n" );
document.write( "                    y - 5x = 3_____y = 3 + 5x ----- eq (ii)\r\n" );
document.write( "      5x - 2(3 + 5x) = - 5 ----- Substituiting 3 + 5x for y in eq (i)\r\n" );
document.write( "           5x - 6 - 10x = - 5\r\n" );
document.write( "                5x - 10x = - 5 + 6\r\n" );
document.write( "                        - 5x = 1\r\n" );
document.write( "                           \r\n" );
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document.write( "                             ---- Substituting  for x in eq (ii)\r\n" );
document.write( "                             y = 3 - 1 = 2\r\n" );
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document.write( "Solution set: \r\n" );
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document.write( "You can do the CHECK!!

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