document.write( "Question 693618: how can i solve y=1/2x + 3 -x+ 2y = 7 \n" ); document.write( "
Algebra.Com's Answer #427473 by ReadingBoosters(3246)\"\" \"About 
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Substitution
\n" ); document.write( "\"-x+%2B+2%28%281%2F2%29x%2B3%29+=+7\" ==> distribute the 2
\n" ); document.write( "-x + x + 6 = 7
\n" ); document.write( "\"6+%3C%3E+7\"
\n" ); document.write( "There is not a solution.
\n" ); document.write( "...
\n" ); document.write( "Upon further review,
\n" ); document.write( "one line is \"highlight%28y=%281%2F2%29x%2B3%29\"
\n" ); document.write( "another line is
\n" ); document.write( "-x + 2y = 7
\n" ); document.write( "2y = x + 7
\n" ); document.write( "\"highlight%28y=%281%2F2%29x+%2B+7%2F2%29\"
\n" ); document.write( "Both lines have the same slope, therefore, the lines are parallel
\n" ); document.write( "and will never intersect, which is why there is no solution.
\n" ); document.write( "…………………………….
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\n" ); document.write( "--Reading Boosters
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