Question

Answer 1

`7^x .7^7 = 7^9`

`=>7^x  = 7^9 : 7^7`

`7^x = 7^2`

`=>x=2`

Answer 2

\(7^x.7^7=7^9\)

\(7^{x+7}=7^9\)

\(x+7=9\)

\(x=2\)

Answer 3

`7^x .7^7=7^9`

`7^x=7^9 :7^7`

`7^x=7^[9-7]=7^2`

`x=2`

Answer 4

`7^x . 7^7 = 7^9`

`=> 7^x     = 7^9 : 7^7`

`=> 7^x      = 7^2`

`=> x=2`

Answer 5

b, 7^x . 7⁷ = 7⁹

7^x = 7⁹ : 7⁷

7^x = 7^9-7

7^x = 7² 

=> x = 2.