document.write( "Question 277187: 8x+3y=152.50
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document.write( "6x+2y=113\r
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document.write( "I have the answer I just dont know how to work it out. \n" );
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Algebra.Com's Answer #201841 by unlockmath(1688) You can put this solution on YOUR website! Hello, \n" ); document.write( "Let's use the substitution method like this: \n" ); document.write( "8x+3y=152.50 \n" ); document.write( "6x+2y=113 \n" ); document.write( "Multiply the first equation by 2 and the second equation by -3. We'll eliminate the y this way. So we get: \n" ); document.write( "16x+6y=305 \n" ); document.write( "-18x-6y=-339 \n" ); document.write( "Now, add both of these equations to get: \n" ); document.write( "-2x=-34 Divide both sides by -2 to get: \n" ); document.write( "x=17 \n" ); document.write( "Now we can plug 17 into the first equation to get: \n" ); document.write( "136+3y=152.5 Subtract 136 from both sides and divide it by 3 to get: \n" ); document.write( "y=5.5 \n" ); document.write( "There we go! Make sense? \n" ); document.write( "RJ \n" ); document.write( "www.math-unlock.com \n" ); document.write( " |