document.write( "Question 511471: 13x+7(-3x-1)=-63 what does x equal? \n" ); document.write( "
Algebra.Com's Answer #342229 by oberobic(2304)\"\" \"About 
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13x +7(-3x-1) = -63
\n" ); document.write( "13x -21x -7 = -63
\n" ); document.write( "-8x = -56
\n" ); document.write( "x = 7
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\n" ); document.write( "Check the answer to be sure it is correct.
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\n" ); document.write( "13(7) + 7(-(3*7) -1) = ?
\n" ); document.write( "91 + 7(-22) = ?
\n" ); document.write( "91 - 154 = -63
\n" ); document.write( "Correct.
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\n" ); document.write( "Answer: x=7
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\n" ); document.write( "Done.\r
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