document.write( "Question 284049: solve this system of equations algebraically :
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document.write( "x^2+y^2=25, 4y=3x \n" );
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Algebra.Com's Answer #206284 by hello_me(3)![]() ![]() ![]() You can put this solution on YOUR website! ok so we have our two equations. so why not sub in y? so we have 4y=3x \n" ); document.write( "so y=3x/4 \n" ); document.write( "when we sub that in we get x^2+9x^2/16 =25 \n" ); document.write( "now to get rid of our fraction mulitply ecverything by 16 \n" ); document.write( "and we get \n" ); document.write( "16x^2+9x^2 = 400 \n" ); document.write( "we then get 25x^2 = 400 \n" ); document.write( "so x^2 = 16 \n" ); document.write( "there fore x can equal 4 or -4 \n" ); document.write( " |