18.(x – 16) = 18

x – 16 = 18 : 18

x – 16 = 1

x = 1 + 16

x = 17.

Ta có :18 . (x - 16) = 18

  <=>      x - 16  = 18 : 18

 <=>       x - 16  =     1

  <=>      x         = 1 + 16

   <=>     x          =   17

 Vậy S={17}

18 . (x - 16) = 18

        x - 16  = 18 : 18

        x - 16  =     1

        x         = 1 + 16

        x          =   17

18 . (x - 16) = 18

        x - 16  = 18 : 18

        x - 16  = 1

        x         = 1 + 16

        x         = 17

Ai tk mik mik tk lại

(x – 36) : 18 = 12

x – 36 = 12.18

x – 36 = 216

x = 216 + 36

x = 252

Vậy x = 252

x – 36 : 18 = 12

x – 2 = 12

x = 12 + 2

x = 14

Vậy x = 14

22+x=18+9=27

x=27-22=5

\(\left(22+x\right)-18=9\)

\(\Leftrightarrow22+x-18=9\)

\(\Leftrightarrow x=5\)

Trả lời: 

22 + x = 18 + 9

22 + x = 27

x = 27 - 22

x = 5 

22+x=18+9=27

x=27-22=5

\(\Rightarrow22+x=27\\ \Rightarrow x=5\)

3

À ko phải

2

x=180;360;540;720

\(x⋮12;x⋮15;x⋮18\Rightarrow x\inƯC\left(12,15,18\right)=\left\{0;180;360;540;720;900;1080;...\right\}\)

Mà \(x< 900\Rightarrow x\in\left\{0;180;360;540;720\right\}\)

180,360,540,720

a) ( x - 34 ) . 15 = 0

=> x - 34 = 0 => x = 34

b) 18 . ( x - 16 ) = 18

=> x - 16 = 1 => x = 17

\(a.\left(x-34\right).15=0\Leftrightarrow x-34=\frac{0}{15}\Leftrightarrow x=34\)Vậy x là 34.

\(b.18.\left(x-16\right)=18\Leftrightarrow x-16=\frac{18}{18}\Leftrightarrow x=17\)Vậy x là 17.