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National and Regional Contests
PEN Problems
PEN H Problems
62
62
Part of
PEN H Problems
Problems
(1)
H 62
Source:
5/25/2007
Solve the equation
7
x
ā
3
y
=
4
7^x -3^y =4
7
x
ā
3
y
=
4
in positive integers.
Diophantine Equations
pen