For integers $x$ and $y,$ $3^{4x+12}=5^{3x+y}.$ What is the value of $y?$

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Vincen: Legendary Member; Posts: 2898; Joined: Thu Sep 07, 2017 2:49 pmFollowed by: 5 members; Thanked: 6 times

by Vincen » Tue Sep 15, 2020 2:10 am

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For integers $x$ and $y,$ $3^{4x+12}=5^{3x+y}.$ What is the value of $y?$

A. -12
B. -3
C. 0
D. 9
E. Cannot be determined

Answer: D

Source: Veritas Prep

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Source: Beat The GMAT — Problem Solving | Tue Sep 15, 2020 2:10 am

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