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nikklg [1K]
3 years ago
12

Please help i will give you brainliest and every yhing

Mathematics
1 answer:
Lina20 [59]3 years ago
7 0

first subtract the last equation from the first. this gives:-

-x + y = -8 .....................(1)

Then multiply the first equation by 2 and add it to the 2nd equations This gives

9x = 18  

so x = 2

and from equation  (1)  y = -8 + 2 = -6

Substituting for x and y in the second equation

z =  (24 -5(2) -12) / 2 =   1


Answer is choice b.

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