document.write( "Question 1204786: 2 ^ log(2,(2x + 3)) + 5^log(5,(x + 7)) = 7 ^ log_7(2x + 18) \n" ); document.write( "
Algebra.Com's Answer #841269 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "use log rule: \"b%5E%28log%28b%2Ck%29%29=k\"\r
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\n" ); document.write( "\n" ); document.write( "\"2%5E%28log%282%2C%282x+%2B+3%29%29%29=2x+%2B+3\"\r
\n" ); document.write( "\n" ); document.write( " \"5%5E%28log%285%2C%28x+%2B+7%29%29%29=x+%2B+7\"\r
\n" ); document.write( "\n" ); document.write( "\"7%5E%28log%287%2C%282x+%2B+18%29%29%29=2x+%2B+18\"\r
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\n" ); document.write( "\n" ); document.write( "\"2x+%2B+3%2Bx+%2B+7=2x+%2B+18\"\r
\n" ); document.write( "\n" ); document.write( "\"3x+%2B+10=2x+%2B+18\"\r
\n" ); document.write( "\n" ); document.write( "\"3x+-2x=++18-10\"\r
\n" ); document.write( "\n" ); document.write( "\"x=++8\"\r
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