-2x + xy = 30.....when y = 8
-2x + 8x = 30
6x = 30
x = 30/6
x = 5 <==
Hi there!
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I believe your answer is:
Option A
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Here’s why:
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Hope this helps you. I apologize if it’s incorrect.

Both equations are equivalent, so there are infinitely many solutions.
Answer:
it is Zero 0
Step-by-step explanation: