document.write( "Question 250060: I need to solve this by the substitution method
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document.write( "5x+2y=-29
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document.write( "x=8-5y
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document.write( "it says the solution is a ordered pair
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document.write( "Can someome help me I'm totally confused. Thanks \n" );
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Algebra.Com's Answer #182256 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! I need to solve this by the substitution method \n" ); document.write( "5x + 2y = -29 \n" ); document.write( "x = 8-5y \n" ); document.write( "it says the solution is a ordered pair: \n" ); document.write( ": \n" ); document.write( "5x + 2y = -29 \n" ); document.write( "x = 8-5y \n" ); document.write( ": \n" ); document.write( "From the 2nd equation we know we can substitute (8-5y) for x in the 1st equation \n" ); document.write( "5(8-5y) + 2y = -29 \n" ); document.write( "Multiply what's inside the brackets \n" ); document.write( "40 - 25y + 2y = -29 \n" ); document.write( "-23y = -29 - 40 \n" ); document.write( "-23y = -69 \n" ); document.write( "Multiply both sides by -1 \n" ); document.write( "23y = 69 \n" ); document.write( "y = \n" ); document.write( "y = 3 \n" ); document.write( ": \n" ); document.write( "Substitute 3 for y in the 2nd equation, find x \n" ); document.write( "x = 8 - 5*(3) \n" ); document.write( ": \n" ); document.write( "x = 8 - 15 \n" ); document.write( "x = -7 \n" ); document.write( ": \n" ); document.write( "Ordered pair: -7, 3 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check the solutions in the 1st equation \n" ); document.write( "5(-7) + 2(3) = -29 \n" ); document.write( "; \n" ); document.write( ": \n" ); document.write( "Did this lessen your confusion here? \n" ); document.write( " |