document.write( "Question 507133: The LCM of numbers 15,70,105 is:can you give this anwer? \n" ); document.write( "

Algebra.Com's Answer #340352 by Edwin McCravy(20077) $\"\"$ $\"About$

You can put this solution on YOUR website!
15,70,105
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document.write( "Break them down into primes, like this (you can use factor trees).\r\n" );
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document.write( " 15 = 3*5,  70 = 2*5*7,  105 = 3*5*7\r\n" );
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document.write( "Now list like factors like this, so that like factor line up\r\n" );
document.write( "vertically in columns:\r\n" );
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document.write( " 15 =   3*5\r\n" );
document.write( " 70 = 2  *5*7\r\n" );
document.write( "105 =   3*5*7\r\n" );
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document.write( "Then draw a line underneath:\r\n" );
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document.write( " 15 =   3*5\r\n" );
document.write( " 70 = 2  *5*7\r\n" );
document.write( "105 =   3*5*7\r\n" );
document.write( "-------------\r\n" );
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document.write( "Now under that line bring down the factor of each column:\r\n" );
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document.write( " 15 =   3*5\r\n" );
document.write( " 70 = 2  *5*7\r\n" );
document.write( "105 =   3*5*7\r\n" );
document.write( "-------------\r\n" );
document.write( "      2*3*5*7\r\n" );
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document.write( "And multiply those together and get 210.  That's the LCM\r\n" );
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document.write( "Edwin

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