document.write( "Question 246076: Can someone please help me with this problem
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document.write( "5x+5y=-7
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document.write( "7x-3y=19
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document.write( "It says to solve the system by elimination and that the solution is an ordered pair, then it says to use fractions or integers for any numbers in the expression. Can anyone help me I do not understand? Thank you, all help is appreciated. \n" );
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Algebra.Com's Answer #179732 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 5x+5y=-7 \n" ); document.write( "7x-3y=19 \n" ); document.write( "------------ \n" ); document.write( "To solve by elimination, you make the coefficients of either x or y match in the 2 eqns. \n" ); document.write( "Multiply eqn 1 by 3 and eqn 2 by 5 to get 15y in both. The signs don't matter. \n" ); document.write( "15x + 15y = -21 Eqn 1 x 3 \n" ); document.write( "35x - 15y = 95 Eqn 2 x 5 \n" ); document.write( "-------------- Add \n" ); document.write( "50x = 74 \n" ); document.write( "x = 37/25 \n" ); document.write( "--------- \n" ); document.write( "Then sub for x in either eqn to find y \n" ); document.write( "5*(37/25) + 5y = -7 \n" ); document.write( "5y = -7 - 37/5 = -72/5 \n" ); document.write( "y = -72/25 \n" ); document.write( "----------- \n" ); document.write( "--> (37/25,-72/25) \n" ); document.write( " \n" ); document.write( " |