Question

tìm x (3x-6).3=81

Answer 1

( 3x - 6 ) . 3 = 81

⇒ 3x - 6 = 27

⇒ 3x = 33

⇒ x = 11.

Vậy x = 11

Answer 2

\(\left(3x-6\right)\cdot3=81\)

\(\Rightarrow9x-18=81\)

\(\Rightarrow9x=81+18\)

\(\Rightarrow9x=99\)

\(\Rightarrow x=\dfrac{99}{9}\)

\(\Rightarrow x=11\)

Answer 3

\(\left(3x-6\right).3=81\)

\(3x-6=81:3\)

\(3x-6=27\)

\(3x=27+6\)

\(3x=33\)

\(x=33:3\)

\(x=11\)

Answer 4

3x-6=81 : 3
3x-6=27
3x=27+6
3x=33
x= 33 : 3
x= 11

Answer 5

(3x-6)x3=81

=>(3x-6)x3=81:3=27

=>3x-6=27:3=9

=>3x=9+6=15

=>x=15:3=5

Vậy x=5

Answer 6

cảm ơn bn nha