document.write( "Question 26639: I AM TRYING TO HELP MY DAUGHTER SOLVE THE FOLLOWING PROBLEM:
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document.write( "x=3y
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document.write( "3y-6=2x\r
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document.write( "Can you help me to explain how to solve this for her? Where do I begin?\r
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document.write( "Thanks,
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document.write( "Jan \n" );
document.write( "
Algebra.Com's Answer #14463 by wuwei96815(245)![]() ![]() ![]() You can put this solution on YOUR website! There are several ways to solve this problem. Let's use the substitution method. Since we know the value of x (x=3y), we can substitute this value in the second equation and solve for y. \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3y-6=2x \n" ); document.write( "3y-6=2(3y) \n" ); document.write( "3y-6=6y \n" ); document.write( "-6=-3y+6y \n" ); document.write( "-6=3y \n" ); document.write( "-6/3=y \n" ); document.write( "-2=y\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now that we have the value for y we can go back and substitute this in either equation and solve for x. \n" ); document.write( "x=3y \n" ); document.write( "x=3(-2) \n" ); document.write( "x=-6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So, x=-6 and y=-2. \n" ); document.write( " |