document.write( "Question 988218: 3x+4=12x+5\r
\n" ); document.write( "\n" ); document.write( "This is what I\"ve tried but don't know if I'm right. Plus I need to know how to check my work.\r
\n" ); document.write( "\n" ); document.write( "3x+4=12x+5 I saw somewhere that I make the 4 a - why do I make it a negative?
\n" ); document.write( "then add 4 to both sides
\n" ); document.write( "3x=12x+9 then divide all by 3
\n" ); document.write( "x=4x+3
\n" ); document.write( "Where do I go from here and please show me how to check my work. Thank you and God bless.
\n" ); document.write( "

Algebra.Com's Answer #608816 by MathTherapy(10552)\"\" \"About 
You can put this solution on YOUR website!
3x+4=12x+5\r
\n" ); document.write( "\n" ); document.write( "This is what I\"ve tried but don't know if I'm right. Plus I need to know how to check my work.\r
\n" ); document.write( "\n" ); document.write( "3x+4=12x+5 I saw somewhere that I make the 4 a - why do I make it a negative?
\n" ); document.write( "then add 4 to both sides
\n" ); document.write( "3x=12x+9 then divide all by 3
\n" ); document.write( "x=4x+3
\n" ); document.write( "Where do I go from here and please show me how to check my work. Thank you and God bless.
\n" ); document.write( "
  3x + 4 = 12x + 5\r\n" );
document.write( "      3x = 12x + 1 --- Subtracting 4 from both sides in order to ISOLATE 3x\r\n" );
document.write( "3x - 12x = 1 --------- Subtracting 12x from both sides to isolate x\r\n" );
document.write( "    - 9x = 1\r\n" );
document.write( "      \"x+=+1%2F%28-+9%29\" --------> \"highlight_green%28x+=+-+1%2F9%29\"\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "======\r\n" );
document.write( "Check\r\n" );
document.write( "======
Since \"x+=+-+1%2F9\", substitute this value into the original equation
\n" ); document.write( "Therefore, 3x + 4 = 12x + 5 becomes:
\n" ); document.write( "\"3%28-+1%2F9%29+%2B+4+=+12%28-+1%2F9%29+%2B+5\"
\n" ); document.write( "\"cross%283%29%28-+1%2F3cross%289%29%29+%2B+4+=+4cross%2812%29%28-+1%2F3cross%289%29%29+%2B+5\"
\n" ); document.write( "\"-+1%2F3+%2B+4+=+-+4%2F3+%2B+5\"
\n" ); document.write( "\"3%262%2F3+=+-+1%261%2F3+%2B+5\"
\n" ); document.write( "\"3%262%2F3+=+3%262%2F3\" (TRUE) \n" ); document.write( "
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