document.write( "Question 29246: I don't remember to much about algebra. I am trying to help my daughter study for a test and I need help. Can you help me answer this question?\r
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document.write( "y=4x-2 and also y=9-5x.
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document.write( "I would really appreciate your help. \n" );
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Algebra.Com's Answer #16074 by wuwei96815(245)![]() ![]() ![]() You can put this solution on YOUR website! I assume that you want to find the values for x and y? There are several ways to do this. One of the simplest is to use substitution. Substitute the value of y from the first equation into the second equation. We get: \n" ); document.write( "4x-2 = 9-5x \n" ); document.write( "Add like terms. \n" ); document.write( "4x+5x = 9 + 2 \n" ); document.write( "9x = 11 \n" ); document.write( "x = 11/9 or 1 2/9\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now we can go back and substitute the value we have found for x into either of the two equations and solve for y. Let's use the first equation. \n" ); document.write( "y = 4(11/9) - 2 \n" ); document.write( "y = 44/9 - 2 = 26/9 or 2 8/9\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So, x= 1 2/9 and y = 2 8/9. I hope that you understood the process. \n" ); document.write( " |