27-(39x+2)=6
39x+2=27-6
39x+2=21
39x=21-2
39x=19
x=39:19
x=39/19
27-3(x+2)=6
-3(x+2)=6-27=-21
3(x+2)=21
x+2=21:3=7
x=7-2=5
27-3(x+2)=6
24 . (x+2)=6
(x+2)=6:24
(x+2)=\(\frac{1}{4}\)
x =\(\frac{1}{4}\)-2
x =\(\frac{-7}{4}\)
Vây...
27-3(x+2)=6
3.x+2=27-6
3.x+2=21
x+2=21:3
x+2=7
x= 7-2
x=5
27 - 3( x + 2 ) = 6
3(x+2)=6+27
3(x+2)=33
x+2=33:3
x+2=11
x = 11 - 2
x = 9
27 - 3 (x+2) = 6
27 - 6 = 3 (x+2)
21 = 3(x+2)
3(x+2)=21
(x+2)= 21 : 3
(x+2)=7
x = 7-2
x = 5
27 - 3 . ( x + 2 ) = 6
3 . ( x + 2 ) = 27 - 6
3 . ( x + 2 ) = 21
x + 2 = 21 : 3
x + 2 = 7
x = 7 - 2
x = 5