document.write( "Question 717958: Solve the system of equations using substitution. 3x + 2y =7. Y = -3x + 11 \n" ); document.write( "
Algebra.Com's Answer #440603 by oscargut(2103)\"\" \"About 
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3x + 2y =7\r
\n" ); document.write( "\n" ); document.write( " Y = -3x + 11\r
\n" ); document.write( "\n" ); document.write( "adding them:\r
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\n" ); document.write( "\n" ); document.write( "2y+11=y+7\r
\n" ); document.write( "\n" ); document.write( "y = -4\r
\n" ); document.write( "\n" ); document.write( "x = 5\r
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