document.write( "Question 454979: can you help solve this equation.-2x + 4 > 12 \n" ); document.write( "
Algebra.Com's Answer #312368 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "-2x + 4 > 12\r\n" );
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document.write( "Subtract 4 from both sides:\r\n" );
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document.write( "-2x + 4 > 12\r\n" );
document.write( "    - 4   -4\r\n" );
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document.write( "-2x     >  8\r\n" );
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document.write( "So we have \r\n" );
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document.write( "    -2x > 8\r\n" );
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document.write( "Now we divide both sides by -2,\r\n" );
document.write( "but we now remember the main difference\r\n" );
document.write( "between solving an INEQUALITY and solving\r\n" );
document.write( "an EQUATION.  When we solve an INEQUALITY\r\n" );
document.write( "if we divide (or multiply) by a negative\r\n" );
document.write( "number we always must reverse the direction\r\n" );
document.write( "of the inequality symbol. So when we divide \r\n" );
document.write( "both sides by -2, we reverse the inequality \r\n" );
document.write( "symbol from > to <\r\n" );
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document.write( "    -2x  >  8\r\n" );
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document.write( "    -2x      8\r\n" );
document.write( "   —————  < ———  \r\n" );
document.write( "     -2     -2\r\n" );
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document.write( "        x < -4\r\n" );
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document.write( "That has this graph:\r\n" );
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document.write( "<================o----------------------------\r\n" );
document.write( "-8  -7  -6  -5  -4  -3  -2  -1   0   1   2   3\r\n" );
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document.write( "and the interval notation for that is\r\n" );
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document.write( "               (-∞,-4) \r\n" );
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document.write( "Edwin

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