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Verified Answer :

CChoma

z= -3 because you need to find z and it has to =  -8

Ematio

z - 5 = -8, for this equation, we will use the elimination method. First, we add 5 to both sides.
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z -5 + 5 = -8 + 5, when we add 5 to -5 they cancel out. 
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z = -3.
      ^ There's your answer!

Hope this helped!