document.write( "Question 973192: Can someone please tell me what I am doing wrong.
\n" ); document.write( "Here is the math problem that I was given:\r
\n" ); document.write( "\n" ); document.write( "\"%28%282x-1%29%2F3%29+%2B+%28%281-3x%29%2F7%29+=+7-2x\"
\n" ); document.write( "I multiplied both sides by 3:
\n" ); document.write( "\"2x-1+%2B+%28%283-9x%29%2F7%29+=+21-6x\"
\n" ); document.write( "Next I multiply through by 7:
\n" ); document.write( "\"14x-7+%2B+3-9x+=+147-42x\"
\n" ); document.write( "Combine like terms:
\n" ); document.write( "\"-151+=+-47x\"
\n" ); document.write( "Divide to solve:
\n" ); document.write( "x=3\r
\n" ); document.write( "\n" ); document.write( "but 3 does not work when I check it, what did I do wrong?\r
\n" ); document.write( "\n" ); document.write( "Thanks\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #595422 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "\"%28%282x-1%29%2F3%29+%2B+%28%281-3x%29%2F7%29+=+7-2x\"\r
\n" ); document.write( "\n" ); document.write( "you multiplied both sides by \"3\":\r
\n" ); document.write( "\n" ); document.write( "\"2x-1+%2B+%28%283-9x%29%2F7%29+=+21-6x\"..... that is correct\r
\n" ); document.write( "\n" ); document.write( "Next you multiply through by \"7\":\r
\n" ); document.write( "\n" ); document.write( "\"14x-7+%2B+3-9x+=+147-42x\"..... that is correct\r
\n" ); document.write( "\n" ); document.write( "\"5x-4+=+147-42x\"\r
\n" ); document.write( "\n" ); document.write( "\"5x%2B42x+=+147%2B4\"\r
\n" ); document.write( "\n" ); document.write( "\"47x+=+151\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+151%2F47\"=> this is \"exact\" \"solution\"\r
\n" ); document.write( "\n" ); document.write( "or approximately \"x+=+3.212765957446809\"=>\"x+=+3.21\"\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );