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(5)^x+3 = (5²)^x-2
(5)^x+3 = (5)^2x-4
x+3 = 2x-4
x-2x = -4-3
-x = -7
x = 7
5^x+3= 5^2x-4
x+3= 2x-4
x-2x= -4-3
-x=-7
x= 7