document.write( "Question 99550: Use distributive property to rewrite each expression.\r
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Algebra.Com's Answer #72409 by bucky(2189) $\"\"$ $\"About$

You can put this solution on YOUR website!
Given:
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\n" ); document.write( " $\"9xy-21xyz\"$
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\n" ); document.write( "Look for the common items in both of the terms and pull them out as factors. The most obvious
\n" ); document.write( "common terms are the x and the y. So you can pull them out to get:
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\n" ); document.write( " $\"xy%289+-+21z%29\"$
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\n" ); document.write( "but notice in the parentheses that a factor of 3 can be taken out because both the 9 and the -21
\n" ); document.write( "can be divided by 3. When you divide the 9 by 3 you are left with 3 in the parentheses
\n" ); document.write( "and when you divide the -21 by 3 you are left with -7 in the parentheses.
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\n" ); document.write( "This makes the answer become:
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\n" ); document.write( " $\"3xy%283+-+7z%29\"$
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\n" ); document.write( "You can check this answer by multiplying the 3xy times each of the terms inside the parentheses.
\n" ); document.write( "The 3xy times the 3 gives you 9xy and the 3xy times -7z results in -21xyz. So you have
\n" ); document.write( "multiplied your way back to 9xy - 21xyz and this is the problem you started with. So
\n" ); document.write( "the answer is correct ... $\"3xy%283+-+7z%29\"$
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\n" ); document.write( "Hope this helps you to see how to work the problem. \n" ); document.write( "

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