joselinmartinez12070 joselinmartinez12070

20-02-2021
Mathematics

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please help me with this math

please help me with this math class=

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Аноним Аноним

20-02-2021

Answer:

C. Aka z = -3.

Step-by-step explanation:

Subtract 7 from both sides.

We have:

-3z-4z=21

So:

-7z=21

21/-7 = -3

The answer is C.

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