document.write( "Question 676330: -3x-9x-9=7x \n" ); document.write( "

Algebra.Com's Answer #420321 by ReadingBoosters(3246) $\"\"$ $\"About$

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First group all x variables on the left by subtracting 7x from both sides
\n" ); document.write( "-3x - 9x - 9 - 7x = 7x - 7x
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\n" ); document.write( "-3x - 9x - 9 - 7x = 0
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\n" ); document.write( "Now move the 9 to the right side by additing it to both sides
\n" ); document.write( "-3x - 9x - 9 + 9 - 7x = 0 + 9
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\n" ); document.write( "-3x - 9x - 7x = 9
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\n" ); document.write( "Add the coefficients of x
\n" ); document.write( "-3 - 9 - 7 = -19
\n" ); document.write( "-19x = 9
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\n" ); document.write( "Divide both sides by -19 to isolate the x variable
\n" ); document.write( " $\"cross%28-19%29x%2Fcross%28-19%29+=+9%2Fhighlight%28-19%29\"$
\n" ); document.write( "...
\n" ); document.write( " $\"highlight_green%28x=-9%2F19%29\"$
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