document.write( "Question 289175: I need help solving
\n" ); document.write( "5x+2y=-7
\n" ); document.write( "7x-3y=13 \n" ); document.write( "

Algebra.Com's Answer #209547 by checkley77(12844) $\"\"$ $\"About$

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5x+2y=-7 multiply by 3
\n" ); document.write( "7x-3y=13 multiply by 2 & add.
\n" ); document.write( "15x+6y=-21
\n" ); document.write( "14x-6y=26
\n" ); document.write( "-------------------
\n" ); document.write( "29x=5
\n" ); document.write( "x=5/29 ans.
\n" ); document.write( "5*5/29+2y=-7
\n" ); document.write( "25/29+2y=-7
\n" ); document.write( "2y=-7-25/29
\n" ); document.write( "2y=(-7*29-25)/29
\n" ); document.write( "2y=(-203-25)/29
\n" ); document.write( "2y=-228/29
\n" ); document.write( "y=(-228/29)/2
\n" ); document.write( "y=-228/29*1/2
\n" ); document.write( "y=-114/29 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "7*5/29-3*(-114/29)=13
\n" ); document.write( "35/29+342/29=13
\n" ); document.write( "377/29=13
\n" ); document.write( "13=13 \n" ); document.write( "

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