document.write( "Question 123307: solve by substitution:\r
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document.write( "x-y=4
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document.write( "-5x+3y=6 \n" );
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Algebra.Com's Answer #90484 by johnnico6426(16)![]() ![]() ![]() You can put this solution on YOUR website! 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 \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( " |