Question

(3x +11) - 9 = 2 mũ 2 + 2mũ 3 

Answer 1

`(3x +11) - 9 = 2^2 + 2^3`

`=>(3x +11) - 9 =4 + 8`

`=>(3x +11) - 9 =12`

`=>3x+11=12+9`

`=>3x+11=21`

`=>3x=21-11`

`=>3x=10`

`=>x=10:3`

`=>x=10/3`

vậy `x=10/3`

Answer 2

\(\left(3x+11\right)-9=2^2+2^3\)

\(\Rightarrow3x+2-2=12-2\Leftrightarrow x=\dfrac{10}{3}\)

Answer 3

\(\left(3x+11\right)-9=2^2+2^3\)

\(3x+11-9=4+8\)

\(3x=4+8-11+9\)

\(3x=10\)

\(x=\dfrac{10}{3}\)