document.write( "Question 41361: Solve the proportion
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document.write( "(c+3)/(C-1) = (c+2)/(c-3) \n" );
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Algebra.Com's Answer #26707 by tutorcecilia(2152)![]() ![]() You can put this solution on YOUR website! To begin, cross-multiply:\r \n" ); document.write( "\n" ); document.write( "(c+3)(c-3) = (c-1)(c+2)\r \n" ); document.write( "\n" ); document.write( "Multiply the factors using FOIL:\r \n" ); document.write( "\n" ); document.write( "c^2 - 3c + 3c - 9 = c^2 + 2c - c - 2\r \n" ); document.write( "\n" ); document.write( "Combine like terms: \n" ); document.write( "c^2 - 9 = c^2 + - c - 2\r \n" ); document.write( "\n" ); document.write( "Sovle for c:\r \n" ); document.write( "\n" ); document.write( "c^2 - c^2 - 9 = c^2 -c^2 + - c - 2 \n" ); document.write( "- 9 = - c - 2 \n" ); document.write( "- 9 + 2 = - c - 2 + 2 \n" ); document.write( "-7 = c \n" ); document.write( "Solve for c: \n" ); document.write( "Checking the answer by plugging -7 back into the original equation: \n" ); document.write( "(-7+3)/(-7-1) = (-7+2)/(-7-3)\r \n" ); document.write( "\n" ); document.write( "-4/-8 = -5/-10\r \n" ); document.write( "\n" ); document.write( "1/2 = 1/2 So, the answer checks out. \n" ); document.write( " |