document.write( "Question 176283This question is from textbook McDougal Littell MATH
\n" ); document.write( ": x+y=2
\n" ); document.write( "2x+7y=9 \n" ); document.write( "

Algebra.Com's Answer #131368 by EMStelley(208) $\"\"$ $\"About$

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Let's solve this one with the addition method. I will multiply the first equation by -2 to obtain the following system:
\n" ); document.write( " $\"-2x-2y=-4\"$
\n" ); document.write( " $\"2x%2B7y=9\"$
\n" ); document.write( "Now, adding the two together, we get:
\n" ); document.write( " $\"5y=5\"$
\n" ); document.write( "So y=1. To find x, we just plug in y=1 to either equation.
\n" ); document.write( " $\"x%2B1=2\"$
\n" ); document.write( "So x=1. Thus the solution is (1,1). \n" ); document.write( "

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