document.write( "Question 52750: 9=13x-7-5x what does x equal show work thanks! \n" ); document.write( "

Algebra.Com's Answer #35188 by AnlytcPhil(1806) $\"\"$ $\"About$

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9=13x-7-5x what does x equal show work thanks!\r\n" );
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document.write( "          9 = 13x - 7 - 5x\r\n" );
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document.write( "First combine the like terms on the right which are\r\n" );
document.write( "13x and -5x.  That gives you 8x. So you take out those \r\n" );
document.write( "two terms and put in the one term \"8x\". So now you \r\n" );
document.write( "have this:\r\n" );
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document.write( "          9 = 8x - 7 \r\n" );
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document.write( "Since you want to get the x-term, 8x, all by itself\r\n" );
document.write( "we get rid of the -7 term on the right by adding its\r\n" );
document.write( "opposite, +7, to both sides\r\n" );
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document.write( "          9 = 8x - 7\r\n" );
document.write( "         +7       +7\r\n" );
document.write( "        -------------\r\n" );
document.write( "         16 = 8x\r\n" );
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document.write( "When we get to this stage, where there is only one \r\n" );
document.write( "term on one side consisting of a coefficient and the\r\n" );
document.write( "unknown, then you divide both sides by that \r\n" );
document.write( "coefficient, which is 8.\r\n" );
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document.write( "         16     8x\r\n" );
document.write( "        ---- = ----\r\n" );
document.write( "          8      8\r\n" );
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document.write( "the 8 goes into the 16 2 times on left, and the 8's\r\n" );
document.write( "cancel on the right:\r\n" );
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document.write( "          2     1\r\n" );
document.write( "         16     8x\r\n" );
document.write( "        ---- = ----\r\n" );
document.write( "          8      8\r\n" );
document.write( "          1      1\r\n" );
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document.write( "so the answer is:\r\n" );
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document.write( "           2 = x\r\n" );
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document.write( "Edwin

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