Question

^{5 mũ x - 1 : 5 = 5 mũ 3}

^{Giải giúp mk với}

Answer 1

Ta có : 5^{x - 1} : 5 = 5³

=> 5^{x - 1} = 5⁴

=> x - 1 = 4

=> x = 5

Vậy x = 5

Answer 2

5^x-1:5=5³
5^x-1=5³.5
5^x-1=5⁴
x-1=4 
x=3

 

Answer 3

\(5^{x-1}:5=125\)

\(5^x:5:5=125\)

\(5^x:1=125\)

\(5^x=125×1\)

\(5^x=125\)

\(5^x=5^3\)

\(x=3\)

vậy x=3

Answer 4

\(5^{x-1}:5=125\)

\(5^{x-1}=125×5\)

\(5^{x-1}=625\)

\(5^{x-1}=5^4\)

x-1=4

x=4+1

x=5

vậy x=5