Log ₁/₃ ( x + y ) = 2
Log₃ ( x - y ) = 2
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1/3 ^ 2 = x + y
3 ^ 2 = x - y
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1/9 = x + y
9 = x - y
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9 1/9 = 2x
x = 82/9 : 2
x = 82/18
x = 41/9
x = 4 5/9
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y = x - 9
y = 4 5/9 - 8 9/9
y = - 4 4/9
Ответ ( 4 5/9 ; - 4 4/9 )