document.write( "Question 204861: Prove: If a*c = b*c and c ? 0, then a = b \r
\n" ); document.write( "\n" ); document.write( "1| a*c = b*c \r
\n" ); document.write( "\n" ); document.write( "2| a*c*(1/c) = b*c*(1/c) \r
\n" ); document.write( "\n" ); document.write( "3| a*[c*(1/c)] = b*[c*(1/c)] \r
\n" ); document.write( "\n" ); document.write( "4| a*1 = b*1 \r
\n" ); document.write( "\n" ); document.write( "5| a = b \r
\n" ); document.write( "\n" ); document.write( "Then the question is\r
\n" ); document.write( "\n" ); document.write( "Choose the reason for line 1 of the proof.\r
\n" ); document.write( "\n" ); document.write( "Identity Property for Multiplication\r
\n" ); document.write( "\n" ); document.write( " Associative Property for Multiplication\r
\n" ); document.write( "\n" ); document.write( "Property of Reciprocals\r
\n" ); document.write( "\n" ); document.write( " Multiplication Property of Equality\r
\n" ); document.write( "\n" ); document.write( "Given\r
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Algebra.Com's Answer #154611 by jim_thompson5910(35256) $\"\"$ $\"About$

You can put this solution on YOUR website!
The reason for line one is simply \"given\" (no pun intended). Whenever you start the problem by stating it, you simply say that it's given. It may sound silly, but when others read your work (without the question in front of them), they know what you're talking about. \n" ); document.write( "

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