Question

tim x 

-13+3(2-x)=15-x

 

Answer 1

-13+6-3x=15-x

-3x+x=15+13-6

-2x=22

x=-11

chuc ban hoc gioi

Answer 2

= -11

ai tk mk

mk tk lại

mk hứa

yên tâm

Answer 3

- 13 + 3 ( 2 - x ) = 15 - x

=> -13 + 6 - 3x = 15 - x

=> - 3x + x = 15 + 13 - 6

=>     - 2x   =      22

=>       x     =    22 : ( -2 )

=>       x     =   - ( 22 : 2 )   

=>       x     =       - 11

Vậy x = -11