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Sagot :
Answer:
B and C
Step-by-step explanation:
The really tough one to get rid of is A. She's right in her method and it sounds like A should be a deal breaker. Suppose however, you make y = 1/x. Now the equation is linear.
y + 3 = 3y Subtract y from both sides
3 = 3y - y
3 = 2y Now divide this by by 2
3/2 = y
But they are not the same answer!! You've gotten rid of one problem only to create another. Well yes. I never said it was easy getting rid of A. But remember y = 1/x, so x will equal 1 / y.
x = 1/y = 1//3/2 = 2/3
Now they agree.
That's kind of sneaky you might say. That's right it is. But its not wrong. A is not part of the answer.
B is certainly right.
C is correct as well, That's the way the equation is ultimately solved.
D is nonsense. You can do all sorts of things with the letters in equations
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