Respuesta :

Answer:

C.  w = -18 + 7

Step-by-step explanation:

You started with..

w - 7 = -18  

and you need to isolate the 2 term, so add 7 to both sides,

w - 7 + 7 = -18 + 7

Which simplifies to

 2 = -18 + 7

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