document.write( "Question 319307: Solve by substitution method\r
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\n" ); document.write( "\n" ); document.write( "y = x + 4
\n" ); document.write( "3y – 5x = 6
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Algebra.Com's Answer #228708 by rfer(16322)\"\" \"About 
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3(x+4)-5x=6
\n" ); document.write( "3x+12-5x=6
\n" ); document.write( "-2x=-6
\n" ); document.write( "x=3
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\n" ); document.write( "3y-5*3=6
\n" ); document.write( "3y-15=6
\n" ); document.write( "3y=21
\n" ); document.write( "y=7
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\n" ); document.write( "7=3+4
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