Question 516126
16 = 2^4 ___ log2(x) = 4[log16(x)]


16 = 4^2 ___ log4(x) = 2[log16(x)]


log16(x) + 2[log16(x)] + 4[log16(x)] = 7


7[log16(x)] = 7


log16(x) = 1


x = 16