Respuesta :

sqdancefan
Add y to both sides of the equation
  x - y = 30
  x - y + y = 30 + y
  x = 30 + y

Now, for y = 15
  x = 30 +15
  x = 45

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The answer choices don't match the posted question.

Answer:

its 200

Step-by-step explanation:

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