document.write( "Question 107211: What is the solution to the system of equations:
\n" ); document.write( "2x +5y + 2z = 6
\n" ); document.write( "5x - 7y = -29
\n" ); document.write( "z = 1\r
\n" ); document.write( "\n" ); document.write( "I have tried this:\r
\n" ); document.write( "\n" ); document.write( "SUBSTITUTION
\n" ); document.write( "2x + 5y + 2(1) = 6
\n" ); document.write( "2x + 5y = 4\r
\n" ); document.write( "\n" ); document.write( "I have tried to solve for y using these equations:
\n" ); document.write( "2x + 5y = 4
\n" ); document.write( "5x - 7y = -29\r
\n" ); document.write( "\n" ); document.write( "MULTIPLY BY 2.5
\n" ); document.write( "5x + 7.5y = 10\r
\n" ); document.write( "\n" ); document.write( "I have tried to solve for y using these equations:
\n" ); document.write( "5x + 7.5y = 10
\n" ); document.write( "5x - 7y = -29\r
\n" ); document.write( "\n" ); document.write( "ELIMINATION
\n" ); document.write( "14.5y = 39\r
\n" ); document.write( "\n" ); document.write( "This would show that y > 2, but upon checking the answers from a resource (This is not a section of the textbook I am using), the answer is in fact, 2. Would you help me see where I made a mistake?
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #78021 by Annabelle1(69) $\"\"$ $\"About$

You can put this solution on YOUR website!
you made a mistake when multiplying by 2.5\r
\n" ); document.write( "\n" ); document.write( "2.5*5 is 12.5 not 7.5\r
\n" ); document.write( "\n" ); document.write( "hope this helps \n" ); document.write( "

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