Question

12 x \(x\) - 66 : 2 = 243

Answer 1

`12xx x-66:12=243`

`12xx x -33 =243`

`12xx x = 243 +33`

`12xx x =276`

`x=276:12`

`x=33`

Vậy `x=33`

Answer 2

12 * x - 66 : 2 = 243

12x - 33 = 243

12x = 243 + 33

12x = 276

x = 276 : 12

x = 23

Vậy x = 23

Answer 3

= 12 x \(x\) : 2 = 243 + 66

= 12 x \(x\) : 2 = 309

= 12 x \(x\) = 309 x 2

= 12 x \(x\) = 618

= \(x\) = 618 : 12

= 51.5