4log3(x+4)-log3(x-1)⁴=4
4*log3(x+4) - log3(x-1)^4 = 4*log3(x+4) - 4*log3(x-1) = 4*log3((x+4)/(x-1)) = 4 log3 ((x+4)/(x-1)) = 1 = log3 (3) (x+4)/(x-1) = 3 x + 4 = 3(x - 1) x + 4 = 3x - 3 2x = 7 x = 3,5