document.write( "Question 206288: y = x + 4
\n" ); document.write( " 3y - 5x= 6 Solve by substitution
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Algebra.Com's Answer #155866 by checkley77(12844)\"\" \"About 
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y=x+4
\n" ); document.write( "3y-5x=6
\n" ); document.write( "3(x+4)-5x=6
\n" ); document.write( "3x+12-5x=6
\n" ); document.write( "-2x=6-12
\n" ); document.write( "-2x=-6
\n" ); document.write( "x=-6/-2
\n" ); document.write( "x=3 ans.
\n" ); document.write( "y=3+4
\n" ); document.write( "y=7 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "3*7-5*3=6
\n" ); document.write( "21-15=6
\n" ); document.write( "6=6
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