document.write( "Question 254456: x-2y=-5
\n" ); document.write( "x+2y=-1\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Use substitution to solve each system of equations. \n" ); document.write( "

Algebra.Com's Answer #186779 by drk(1908) $\"\"$ $\"About$

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Here were the original equations:
\n" ); document.write( "(i) $\"x+-+2y+=+-5\"$
\n" ); document.write( "(ii) $\"x+%2B+2y+=+-1\"$
\n" ); document.write( "step 1 - solve (i) for x to get
\n" ); document.write( "(iii) $\"x+=+2y+-+5\"$
\n" ); document.write( "Step 2 - substitute (iii) into (ii) to get
\n" ); document.write( "(iv) 2Y - 5 + 2y = -1}}}
\n" ); document.write( "step 3 - solve for y
\n" ); document.write( " $\"4Y+-+5+=+-1\"$
\n" ); document.write( " $\"4Y+=+4\"$
\n" ); document.write( " $\"y+=+1\"$
\n" ); document.write( "step 4 - find x.
\n" ); document.write( "from (iii), $\"x=-3\"$
\n" ); document.write( "(-3,1) \n" ); document.write( "

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