Question

1,   24+3.(5-x)=27

x = ?

2,   2.(x-5)-17=25

x = ?

Answer 1

24 + 3 . ( 5 - x ) = 27

3 . ( 5 - x ) = 27 - 24

3 . ( 5 - x ) = 3

5 - x = 3 : 3

5 - x = 1

x = 5 - 1

x = 4 

Vậy x = 4

2 . ( x - 5 ) - 17 = 25

2 . ( x - 5 ) = 25 + 17

2 . ( x - 5 ) = 42

x - 5 = 42 : 2

x - 5 = 21

x = 21 + 5

x = 26

Vậy x = 26

Answer 2

cảm ơn

Answer 3

 24 + 3 x ( 5 - X ) = 27

27 x ( 5 - X )        = 27

5 - X                   = 27 : 27 

5 - X                   = 1 

X                       = 5 - 1

X                       = 4  

2 x  ( X - 5 ) - 17 = 25 

2 x (  X  - 5 ) = 27 + 15 

2 x (  X -  5 )  =  42 

X - 5             = 42 : 2 

X - 5              = 21 

X                  = 21 + 5 

X                  = 26 

Answer 4

24 + 3 . ( 5 - x ) = 27

3 . ( 5 - x ) = 27 - 24

3 . ( 5 - x ) = 3

5 - x = 3 : 3

5 - x = 1

x = 5 - 1

x = 4 

Vậy x = 4

2 . ( x - 5 ) - 17 = 25

2 . ( x - 5 ) = 25 + 17

2 . ( x - 5 ) = 42

x - 5 = 42 : 2

x - 5 = 21

x = 21 + 5

x = 26

Vậy x = 26