document.write( "Question 184797: Solve the system of equations by the substitution method.\r
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document.write( "x+11y=51
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document.write( "3x+6y=18\r
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document.write( "So are you saying there is no solution? \n" );
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Algebra.Com's Answer #138724 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Solve the system of equations by the substitution method. \n" ); document.write( "x+11y=51 \n" ); document.write( "3x+6y=18 \n" ); document.write( "Let's see if there is a solution \n" ); document.write( "x = (51 - 11y); use 1st equation for substitution in the 2nd equation: \n" ); document.write( ": \n" ); document.write( "3(51-11y) + 6y = 18 \n" ); document.write( ": \n" ); document.write( "153 - 33y + 6y = 18 \n" ); document.write( ": \n" ); document.write( "-27y = 18 - 153 \n" ); document.write( ": \n" ); document.write( "-27y = -135 \n" ); document.write( "y = \n" ); document.write( "y = +5 \n" ); document.write( ": \n" ); document.write( "Find x: x = (51-11y) \n" ); document.write( "x = 51 - 11(5) \n" ); document.write( "x = 51 - 55 \n" ); document.write( "x = -4 \n" ); document.write( "; \n" ); document.write( ": \n" ); document.write( "Check solution in the 2nd equation \n" ); document.write( "3x + 6y = 18 \n" ); document.write( "3(-4) + 6(5) = \n" ); document.write( "-12 + 30 = 18 \n" ); document.write( " |