document.write( "Question 694719: HEY EVERYBODY .. I NEED SOME HELP SOLVE THIS EXPRESSION..
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document.write( "2x+5y = 20
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document.write( "-3x+2y= 12
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document.write( "I HAVE TO FIND THE X- COORDINATE.. \n" );
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Algebra.Com's Answer #428140 by 55305(86)![]() ![]() ![]() You can put this solution on YOUR website! We can solve this by system of equations.if you want to find x, we must get rid of y. the LCM of 5 and 2 is 10, so we need to multiply the top equation by 2 and the bottom one by 5. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "now we can subtract the bottom equation from the top to get:\r \n" ); document.write( "\n" ); document.write( " (4x+10y=40) \n" ); document.write( "-(-15x+10y=60) \n" ); document.write( "________________ \n" ); document.write( " 19x=-20 \n" ); document.write( " x=-20/19, if you plug that into any of the equations, y would equal 84/19 \n" ); document.write( " |