document.write( "Question 569689: $\"x%2B3x%2B6x-20=180\"$ x=10 How do you come up with answer 10 for x? \n" ); document.write( "

Algebra.Com's Answer #367422 by JBarnum(2146) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%2B3x%2B6x-20=180\"$
\n" ); document.write( " $\"10x-20=180\"$
\n" ); document.write( " $\"10x=200\"$
\n" ); document.write( " $\"x=20\"$
\n" ); document.write( "x doesnot equal 10
\n" ); document.write( "to prove it put 10 in place of x and solve\r
\n" ); document.write( "\n" ); document.write( ".
\n" ); document.write( " $\"x%2B3x%2B6x-20=180\"$
\n" ); document.write( " $\"10%2B30%2B60-20=180\"$
\n" ); document.write( " $\"100-20=180\"$
\n" ); document.write( " $\"80=180\"$
\n" ); document.write( "incorrect
\n" ); document.write( ".
\n" ); document.write( " $\"x%2B3x%2B6x-20=180\"$
\n" ); document.write( " $\"20%2B60%2B120-20=180\"$
\n" ); document.write( " $\"180=180\"$
\n" ); document.write( "correct $\"highlight%28x=20%29\"$ \n" ); document.write( "

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