document.write( "Question 63880: Solve the system by substitution.
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document.write( " x + 4y = –4
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document.write( " 3x – 3y = –12
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Algebra.Com's Answer #44526 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! X+4Y=-4 \n" ); document.write( "X=-4Y-4 REPLACE X BY (-4Y-4) IN THE SECOND EQUATION \n" ); document.write( "3(-4Y-4)-3Y=-12 \n" ); document.write( "-12Y-12-3Y=-12 \n" ); document.write( "-15Y=0 \n" ); document.write( "Y=0 SOLUTION \n" ); document.write( "X=-4*0-4 \n" ); document.write( "X=-4 SOLUTION\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |