document.write( "Question 63358This question is from textbook Holt Pre-Algebra
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document.write( ": I would like you to help me with this problem: 5x-9y=11, 3x+7y=19. \n" );
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Algebra.Com's Answer #44149 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! 5x - 9y = 11 \n" ); document.write( "3x + 7y = 19 \n" ); document.write( ": \n" ); document.write( "Using the elimination method to eliminate x: \n" ); document.write( "Mult the 1st equation by 3 \n" ); document.write( "Mult the 2nd equation by 5: \n" ); document.write( ": \n" ); document.write( "15x - 27y = 33 \n" ); document.write( "15x + 35y = 95 \n" ); document.write( "---------------- Subtract \n" ); document.write( "0x - 62y = -62 \n" ); document.write( "Divide both sides by -62 \n" ); document.write( "y = -62/-62 \n" ); document.write( "y = +1 \n" ); document.write( ": \n" ); document.write( "Find x; substitute 1 for y in the 1st equation: \n" ); document.write( "5x - 9(1) = 11 \n" ); document.write( "5x - 9 = 11 \n" ); document.write( "5x = 11 + 9 \n" ); document.write( "5x = 20 \n" ); document.write( "x = 20/5 \n" ); document.write( "x = +4: \n" ); document.write( ": \n" ); document.write( "Check solutions in 2nd equation: 3(4) + 7(1) = 19\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |