Question

[tex](2/5)^{4} *(2/5)^{-7} =(2/5)^{2x-1}

Answer 1

Answer

x = 1

Step-by-step explanation:

Your Question might be $(2/5)^{4} *(2/5)^{-7} =(2/5)^{2x-1}$

So as the bases are same the powers would add

$(2/5)^{4-7} =(2/5)^{2x-1}$

$(2/5)^{-3} =(2/5)^{2x-1}$                (Comparing both sides)

-3    =    2x - 1                          (Adding 1 to both sides)

-2    =    2x                               (Dividing by 2 both sides)

-1     =     x