document.write( "Question 228152: if f(x)=4x+3 and f(x)=23 what is the value of x?
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Algebra.Com's Answer #169432 by nerdybill(7384)\"\" \"About 
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if f(x)=4x+3 and f(x)=23 what is the value of x?
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\n" ); document.write( "So you started with:
\n" ); document.write( "f(x)=4x+3
\n" ); document.write( "Then, they said that
\n" ); document.write( "f(x)=23
\n" ); document.write( "Substitute the above in for f(x) and solve for 'x':
\n" ); document.write( "23=4x+3
\n" ); document.write( "20=4x
\n" ); document.write( "5 = x
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