document.write( "Question 41872: PLEAS HELP \r
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document.write( "USE LINEAR COMBINATIONS TO SOLVE THE FOLLOWING \r
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document.write( "1. 2x -3y = -16
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document.write( " x + 3 = 10\r
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document.write( "2. 3x + y = -8
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document.write( " -3x + 4y = -2\r
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document.write( "3. 2x -y = 1
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document.write( " 2x + 5y = -5\r
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document.write( "please i need some help. \n" );
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Algebra.Com's Answer #27077 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! SEE THE FOLLOWING AND TRY.IF STILL IN DIFFICULTY PLEASE COME BACK\r \n" ); document.write( "\n" ); document.write( "you gave me a site to go on and i can't get on it i am trying to see how to do these because i am out of school right now and hve no one to show me \n" ); document.write( "use linear combinations to solve the system linera equation \n" ); document.write( "THESE ARE ALL SIMILAR PROBLEMS.I SHALL SHOW ONE AND YOU MAY TRY THE OTHERS. \n" ); document.write( "1. x + 2 =5....................EQN.I \n" ); document.write( "3x - 2y =7.....................EQN.II \n" ); document.write( "1.THERE ARE 2 UNKNOWNS AND 2 EQNS. \n" ); document.write( "2.IF THERE IS 1 UNKNOWN AND 1 EQN.WE CAN SOLVE IT \n" ); document.write( "3.SO WE TRY TO REMOVE ONE UNKNOWN BY ELIMINATION. \n" ); document.write( "EQN.I GIVES X=5-2=3 \n" ); document.write( "EQN.II ..3*3-2Y=7 \n" ); document.write( "2Y=9-7=2 \n" ); document.write( "Y=1 \n" ); document.write( "2. x + y = 1......................III \n" ); document.write( "2x -3y = 12........................IV \n" ); document.write( "EQN.I*2-EQN.II \n" ); document.write( "2X+2Y-2X+3Y=2-12=-10 \n" ); document.write( "5Y=-10 \n" ); document.write( "Y=-2 \n" ); document.write( "PUT THIS IN EQN.III \n" ); document.write( "X-2=1 \n" ); document.write( "X=3....ETC.. \n" ); document.write( "3. x -y = -4 \n" ); document.write( "x + 2y = 5 \n" ); document.write( " |