document.write( "Question 1170494: Evalute 1/2+1/8+3/16÷5/8+3/16 \n" ); document.write( "
Algebra.Com's Answer #795369 by Edwin McCravy(20055)\"\" \"About 
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document.write( "The way you wrote it, using no parentheses at all, the PEMDAS rule \r\n" );
document.write( "says that you mean this:\r\n" );
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document.write( "\"1%2F2%2B1%2F8%2B3%2F16\"÷\"5%2F8%2B3%2F16\"\r\n" );
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document.write( "where we do the division \"3%2F16\"÷\"5%2F8\" first, then change it\r\n" );
document.write( "to multiplication by the reciprocal of the second as \"3%2F16\"×\"8%2F5\"\r\n" );
document.write( "where when we cancel we get \"3%2F10\"\r\n" );
document.write( "So we replace the \"3%2F16\"÷\"5%2F8\" by \"3%2F10\" and now we have:\r\n" );
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document.write( "\"1%2F2%2B1%2F8%2B3%2F10%2B3%2F16\"\r\n" );
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document.write( "and the LCD is 80, so we have\r\n" );
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document.write( "\"40%2F80%2B10%2F80%2B24%2F80%2B15%2F80\"\r\n" );
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document.write( "We add the numerators and put it over the LCD as\r\n" );
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document.write( "\"89%2F80\" or \"1%269%2F80\"\r\n" );
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document.write( "But you may have forgotten about parentheses and ignored the PEMDAS rule \r\n" );
document.write( "and meant this instead:\r\n" );
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document.write( "\"%281%2F2%2B1%2F8%2B3%2F16%29\"÷\"%285%2F8%2B3%2F16%29\"\r\n" );
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document.write( "If so we get LCD of 16 on the left and right\r\n" );
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document.write( "\"%288%2F16%2B2%2F16%2B3%2F16%29\"÷\"%2810%2F16%2B3%2F16%29\"\r\n" );
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document.write( "\"13%2F16\"÷\"13%2F16\"\r\n" );
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document.write( "We know that when we divide a number by itself we get 1\r\n" );
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document.write( "or we can invert the second and multiply:\r\n" );
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document.write( "\"13%2F16\"×\"16%2F13\"\r\n" );
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document.write( "and after canceling, we get 1.\r\n" );
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document.write( "So if you ignored PEMDAS and parentheses, the answer is 1.\r\n" );
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document.write( "Edwin
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