Question

tìm n nhé:

3⁴.3ⁿ = 3⁷

Answer 1

3\(^4\).3\(^n\)=3\(^7\)

=> 3\(^n\)= 3\(^7\) : 3 \(^4\)

=>3 \(^n\) = 3 \(^3\)

=> n = 3

Answer 2

3⁴.3ⁿ = 3⁷

=> 3ⁿ = 3⁷ : 3⁴

=> 3ⁿ = 3³

=> n = 3

Answer 3

\(3^4.3^n=3^7\)

\(3^n=3^7-3^4\)

\(3^n=3^3\)

\(3^3\Rightarrow n=3\)

Answer 4

\(3^4.3^n=3^7\)

\(3^n=3^7:3^4\)

\(3^n=3^3\)

\(3^3\Rightarrow n=3\)

Answer 5

3^4 . 3^n = 3^7

-> 3^n = 3^7 - 3^4

3^n = 3^3

-> n = 3

Vậy n = 3

Answer 6

\(3^4.3^n=3^7\)

\(3^n=3^7:3^4\)

\(3^n=3^3\)

\(=>n=3\)