Question

mn giúp e vs!!!!!
tìm x:
230 - (2x - 8) = 2^3.

Answer 1

x=115

Answer 2

\(230-\left(2x-8\right)=2^3\\ \Rightarrow230-\left(2x-8\right)=8\\ \Rightarrow2x-8=222\\ \Rightarrow2x=230\\ \Rightarrow x=115\)

Answer 3

230 - 2x + 8 = 8

238 - 2x = 8

- 2x = -230

x = 115

Answer 4

\(\text{230 - 2x + 8 = 8}\)

\(\text{238 - 2x = 8}\)

\(\text{-2x = 230}\)

Vậy x = -115

Answer 5

<=> 230 -2x+8 =8

<=>2x= 230+8-8

<=>2x=230

<=>x= 115

Vậy x.....

Chúc bạn học tốt nha!

Answer 6

230 - 2x + 8 = 8

238 - 2x = 8

- 2x = -230

x = 115

Answer 7

\(\text{230 - 2x + 8 = 8}\)

\(\text{238 - 2x = 8}\)

\(\text{-2x = -230}\)

\(\Rightarrow x=155\)

 

Answer 8

 

tìm x:

230 - (2x - 8) = 2^3

 230- (2x - 8). =8

            2x - 8.   =230-8

             2x - 8.   = 222

            2x.           =222 - 8

             2x.           = 214

               x.            = 214 : 2

                x.            = 107