Nate11282001
Nate11282001 Nate11282001
  • 24-07-2017
  • Mathematics
contestada

find 3x-y-3z if x=-2, y=1, z=-2

find 3xy3z if x2 y1 z2 class=

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DragunicGaming
DragunicGaming DragunicGaming
  • 24-07-2017
Substitute everything in first


3(-2)-1-3(-2)


Then simplify


-6-1+6 = -1


The answer is -1
Answer Link
nickktait
nickktait nickktait
  • 24-07-2017
3 x (-2) - 1 - 3 x (-2) 
(Simplify by: Multiplying a positive and a negitive equals a negative: 
(+) x (-) = (+)) 
Multiplying two negitives equals a positive:
(-) x (-) = (+) )
-3 x 2 - 1 + 3 x 2
(Eliminate the opposites)
Answer: -1
Answer Link

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