document.write( "Question 1114174: if, f(x)=9-3x for what value of x does f(x)=12 \n" ); document.write( "

Algebra.Com's Answer #729188 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "If f(x) = 9 - 3x  and  f(x) = 12,   it means\r\n" );
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document.write( "9 - 3x = 12,\r\n" );
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document.write( "9 - 12 = 3x\r\n" );
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document.write( "-3 = 3x  ====>  x =  = -1.\r\n" );
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document.write( "Answer.  x = -1.\r\n" );
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