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If x = 5y and x = 3z + 7y, what is y in terms of z?

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If x = 5y and x = 3z + 7y, what is y in terms of z? [#permalink] New post   31 Dec 2021, 07:01
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If x = 5y and x = 3z + 7y, what is y in terms of z?


(A) 3z
(B) 2z/3
(C) -2z
(D) 3z/2
(E) -3z/2
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E
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Re: If x = 5y and x = 3z + 7y, what is y in terms of z? [#permalink] New post   31 Dec 2021, 20:08
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\(x = 5y\) and \(x = 3z + 7y\)

Comparing the values of \(x\)

\(5y = 3z + 7y\)

\(2y = -3z\)

\(y = \frac{-3z}{2}\)

Answer E
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Re: If x = 5y and x = 3z + 7y, what is y in terms of z? [#permalink]
31 Dec 2021, 20:08
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