document.write( "Question 334823: Please help solve by substitution method.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "y = x + 4
\n" ); document.write( "3y -5x = 6
\n" ); document.write( "

Algebra.Com's Answer #239904 by erikaii.19(2)\"\" \"About 
You can put this solution on YOUR website!
y = x + 4
\n" ); document.write( "3y -5x = 6\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "a) 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=3\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "b) y=x+4
\n" ); document.write( " y=3+4
\n" ); document.write( " y=7\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "CHECKING\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " 1) 7=3+4
\n" ); document.write( " 7=7\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " 2) 3(7)-5(3)=6
\n" ); document.write( " 21-15=6
\n" ); document.write( " 6=6\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( ":)
\n" ); document.write( "
\n" );