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Alexeev081 [22]
3 years ago
10

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

Mathematics
2 answers:
horsena [70]3 years ago
8 0
Substitute everything in first


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


Then simplify


-6-1+6 = -1


The answer is -1
Mice21 [21]3 years ago
4 0
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
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Read 2 more answers
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