Find the product of the greatest common divisor and the least common multiple of 18 and 42.

1 answer:

5 0

The product of the greatest common divisor and the least common multiple of two numbers is always the product of the two numbers. So, you have

$\text{lcm}(18,42)\times\text{GCD}(18,42)=18\times 42=756$

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What is the solution of the system of equations? y= -3x+8 y= -5x-2

Crazy boy [7]

Y = -3x+8
y = -5x-2
------------
y = 5(-3x+8)
y = 3(-5x-2)
---------------
y = -15x+40
y = -15x-6
--------------
y = -15x+40
- -
y = -15x-6
--------------
y = 46

y = -3x+8
46 = -3x+8
-8 -8
---------------
38 = -3x
---- ----
-3 -3
12.666...=x
(12.666.,46) ← Answer

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3 years ago

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