anonymous
  • anonymous
what is the LCM of 15x,12x? I am tutoring a student who says that one simply drops the x? That can't be right
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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apples
  • apples
You can't drop the x, since you don't know what its factors compose of. The lcm is instead \[\frac{12x \cdot 15x}{gcd(12x, 15x)}\] which should make enough sense; you need to multiply 12x and 15x together to find a common denominator, then divide by the greatest common denominator of that product.
radar
  • radar
the LCD is the smallest number that has the factors of 12x and 15x
radar
  • radar
the factors (prime) of 12 is 2*2*3 and 15 is 5*3 so the LCD must be 2*2*3*5 or 60

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anonymous
  • anonymous
hello
anonymous
  • anonymous
all
radar
  • radar
I forgot to include the x !! 60x
radar
  • radar
You can not simply drop the x!

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