5^x = a ; 5^y = b ; a > 0 ; b > 0
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a - b = 100
1/5a + 1/5b = 30
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a - b = 100
a + b = 150
2a = 250
a = 125
b = 150 - 125 = 25
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5 ^x = 125
5 ^x = 5^3
x = 3
5^y = 25
5^y = 5^2
y = 2
ОТВЕТ ( 3 ; 2 )