document.write( "Question 184388: `please help me solve each system of equation
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document.write( " 1.) x-2y=-14 2.) x+2y=4 3.) 3x-y=2
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document.write( " y+2x=4 2x+y=-1 y=2x-5\r
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document.write( "and whats the solution??'
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document.write( "Can you help me solve all of them is because i am bad at math ={ Thank You I would really appreciate it \n" );
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Algebra.Com's Answer #138422 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 1)x-2y=-14 OR x=2y-14 now replace x with(2y-14) in the other equation & solve for y. \n" ); document.write( "y+2x=4 \n" ); document.write( "y+2(2y-14)=4 \n" ); document.write( "y+4y-28=4 \n" ); document.write( "5y=4+28 \n" ); document.write( "5y=32 \n" ); document.write( "y=32/5 ans \n" ); document.write( "x=2*32/5-14 \n" ); document.write( "x=64/5-14 \n" ); document.write( "x=(64-14*5)/5 \n" ); document.write( "x=(64-70)/5 \n" ); document.write( "x=-6/5 ans. \n" ); document.write( "Proof: \n" ); document.write( "32/5+2*-6/5=4 \n" ); document.write( "32/5-12/5=4 \n" ); document.write( "20/5=4 \n" ); document.write( "4=4 \r \n" ); document.write( "\n" ); document.write( "2)x+2y=4 or x=4-2y now replace x with (4-2y) in the other equation & solve for y. \n" ); document.write( "2x+y=-1 \n" ); document.write( "2(4-2y)+y=-1 \n" ); document.write( "8-4y+y=-1 \n" ); document.write( "8-3y=-1 \n" ); document.write( "-3y=-1-8 \n" ); document.write( "-3y=-9 \n" ); document.write( "y=-9/-3 \n" ); document.write( "y=3 ans. \n" ); document.write( "x=4-2*3 \n" ); document.write( "x=4-6 \n" ); document.write( "x=-2 \n" ); document.write( "Proof: \n" ); document.write( "-2+2*3=4 \n" ); document.write( "-2+6=4 \n" ); document.write( "4=4\r \n" ); document.write( "\n" ); document.write( "3)3x-y=2 \n" ); document.write( " y=2x-5 replace y with (2x-5) in the other equation & solve for x. \n" ); document.write( "3x-(2x-5)=2 \n" ); document.write( "3x-2x+5=2 \n" ); document.write( "x=2-5 \n" ); document.write( "x=-3 ans. \n" ); document.write( "y=2*-3-5 \n" ); document.write( "y=-6-5 \n" ); document.write( "y=-11 ans. \n" ); document.write( "Proof: \n" ); document.write( "3*-3-(-11)=2 \n" ); document.write( "-9+11=2 \n" ); document.write( "2=2 \n" ); document.write( " \n" ); document.write( " |