134-4.(11-x)=30
=>4.(11-x)=134-30
=>4.(11-x)=104
=>11-x=104:4
=>11-x=26
=>x=11-26
=>x= -15
134-4.(11-x)=30
⇒4.(11-x)=134-30
⇒4.(11-x)=104
⇒11-x=104:4
⇒11-x=26
⇒x=11-26
⇒x= -14
Vậy x= -14
đúng thì cho tik nha
134 - 4 . ( 11 - x ) = 30
4 . ( 11 - x ) = 134-30
4. (11 - x) = 104
11 - x = 104: 4
11 - x = 26
x = 11 - 26
x = -15
Vậy x = -15