document.write( "Question 123307: solve by substitution:\r
\n" ); document.write( "\n" ); document.write( "x-y=4
\n" ); document.write( "-5x+3y=6
\n" ); document.write( "

Algebra.Com's Answer #90484 by johnnico6426(16)\"\" \"About 
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x-y=4
\n" ); document.write( "-5x+3y=6\r
\n" ); document.write( "\n" ); document.write( "1)The first step is to add y in the equation x-y=4 to both sides.
\n" ); document.write( "2)If you do that, you should get x=y+4.
\n" ); document.write( "3)You then substitute \"y%2B4\" for x in the second equation -5x+3y=6.
\n" ); document.write( "4)If you simplify it, you should end up with -2*y-20=6.
\n" ); document.write( "5)Solve for y.
\n" ); document.write( "6)Substitue the value of y in the equation x-y=4 to find out the value of x.
\n" ); document.write( "Solution:
\n" ); document.write( "x=-9
\n" ); document.write( "y=-13
\n" ); document.write( "
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