Question

Tìm số tự nhiên x, biết:

172-2 . (x-12)=94

Cảm ơn các bạn trước nhé.

 

Answer 1

\(172-2.\left(x-12\right)=94\)

\(\Rightarrow2.\left(x-12\right)=172-94\)

\(\Rightarrow2.\left(x-12\right)=78\)

\(\Rightarrow x-12=78\div2\)

\(\Rightarrow x-12=39\)

\(\Rightarrow x=39+12\)

\(\Rightarrow x=51\)

Answer 2

172-2.(x-12)=94

2.(x-12)=172-94

2.(x-12)=78

x-12=78:2

x-12=39

x=39+12

x=51

Answer 3

\(172-2.\left(x-12\right)=94\)

\(2\left(x-12\right)=172-94\)

\(2\left(x-12\right)=78\)

\(x-12=39\)

\(x=51\)

vậy \(x=51\)

Answer 4

\(172-2\left(x-12\right)=94\)

\(\Rightarrow2\left(x-12\right)=172-94\)

\(\Rightarrow2\left(x-12\right)=78\)

\(\Rightarrow x-12=39\)

\(\Rightarrow x=39+12=51\)

Answer 5

172-2.(x-12)=94

2(x-12)=172-94

2(x-12)=78

x-12=78:2=39

x=39-12

x=27

Answer 6

mình làm lộn nha

x-12=39

x=39+12

x=51

Answer 7

172 -  2 . ( x - 12) = 94 

         2 . ( x - 12 ) = 172 - 94 

         2 . ( x - 12 ) =78 

               x  - 12   =78 : 2 

               x -12     =39

                x          =39 +12

                x          =51

Vậy x = 51  

Answer 8

-2.(x-12)= 94-172

x-12=39

x=51

Answer 9

172-2.(x-12)=94

2(x-12)=172-94

2(x-12)=78

x-12=78:2=39

x=39-12

x=27

k nha