document.write( "Question 55505This question is from textbook Mathematics with Applications
\n" ); document.write( ": I really need some help. I am back to school after 30 years and I don't have a clue. Here is the equation:\r
\n" ); document.write( "\n" ); document.write( "6r-18divided by 9r^2+6r-24 times 12r-16 divided by 4r-12\r
\n" ); document.write( "\n" ); document.write( "Thanks\r
\n" ); document.write( "\n" ); document.write( "Lynn \n" ); document.write( "

Algebra.Com's Answer #37668 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

You can put this solution on YOUR website!
6r-18divided by 9r^2+6r-24 times 12r-16 divided by 4r-12
\n" ); document.write( ":
\n" ); document.write( " $\"%286r-18%29%2F%289r%5E2%2B6r-24%29\"$ * $\"%2812r-16%29%2F%284r-12%29\"$
\n" ); document.write( ":
\n" ); document.write( "Concentrate on (9r^2 + 6r - 24), simplify and factor if possible:
\n" ); document.write( "3(3r^2 + 2r - 8) can be further factored to: 3(3x - 4)(x + 2), factoring the others is pretty easy, you will have:
\n" ); document.write( ":
\n" ); document.write( " $\"6%28r-3%29%2F3%283r-4%29%28r%2B2%29\"$ * $\"4%283r-4%29%2F4%28r-3%29\"$
\n" ); document.write( ":
\n" ); document.write( "Can do some major cancelling here: 3 into 6, 4 into 4, leaving us with:
\n" ); document.write( " $\"2%28r-3%29%2F%283r-4%29%28r%2B2%29\"$ * $\"%283r-4%29%2F%28r-3%29\"$
\n" ); document.write( ":
\n" ); document.write( "you know that you can cancel across the \"*\" so you can cancel (r-3) & (3r-4):
\n" ); document.write( " $\"2%2F%28r%2B2%29\"$ is what's left
\n" ); document.write( ":
\n" ); document.write( "Usually when they give you these problems, a lot of factoring can be done, so look for that first.
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