document.write( "Question 222772: the sum of an unknown number and 12 is subtracted from 4 times the unknown number, the result is the unknown number less 4 \n" ); document.write( "
Algebra.Com's Answer #166890 by ankor@dixie-net.com(22740)\"\" \"About 
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the sum of an unknown number and 12 is subtracted from 4 times the unknown number,
\n" ); document.write( " the result is the unknown number less 4
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\n" ); document.write( "Let x = \"unknown number\"
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\n" ); document.write( "write an equation for that statement:
\n" ); document.write( "\"sum of an unknown number and 12 is subtracted from 4 times the unknown number,
\n" ); document.write( " the result is the unknown number less 4\"
\n" ); document.write( ":
\n" ); document.write( "4x - (x + 12) = x - 4
\n" ); document.write( ":
\n" ); document.write( "4x - x - 12 = x - 4
\n" ); document.write( ":
\n" ); document.write( "3x = x - 4 + 12
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\n" ); document.write( "3x - x = 8
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\n" ); document.write( "2x = 8
\n" ); document.write( "x = \"8%2F2\"
\n" ); document.write( "x = 4
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\n" ); document.write( "Check solution in the statement:
\n" ); document.write( "the sum of an unknown number and 12 is subtracted from 4 times the unknown
\n" ); document.write( " number, the result is the unknown number less 4
\n" ); document.write( "4(4) - (4+12) = 4 - 4
\n" ); document.write( "16 - 16 = 0 \n" ); document.write( "
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