please solve this question
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(3/7)^-2x+1 ÷ (3/7)^-1 = ((3/7)^-1)^-7
(3/7)^-2x+1+1 =(3/7)^7
so -2x+1+1 = 7
-2x +2 = 7
-2x = 5
x = -5/2
(3/7)^-2x+1+1 =(3/7)^7
so -2x+1+1 = 7
-2x +2 = 7
-2x = 5
x = -5/2
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