245 -5 . (16 + x ) = 140
5 . ( 16 + x ) = 245 - 140
5 . ( 16 + x ) = 105
16 + x = 105 : 5
16 + x = 21
x = 21 - 16
x = 5
245-5.(16+X)=140
5.(16+X)=245-140
5.(16+X)= 105
16+X= 105:5
16+X= 21
X=21-16
X= 5
K cho mik nhe
245 - 5 . ( 16 + x ) = 140
5 . ( 16 + x ) = 245 - 140
5 . ( 16 + x ) = 105
16 + x = 105 : 5
16 + x = 21
x = 21 - 16
x = 5