Question

5.(12-x)-20=30

Answer 1

`5(12 - x) - 20 =30`

`=> 5(12 - x) = 30 + 20`

`=> 5(12 - x) = 50`

`=>  12 - x = 50 :5`

`=> 12 - x = 10`

`=>   x =12 -10`

`=> x = 2`

Vậy `x=2`

Answer 2

Khó quá

Answer 3

dễ ....

5.(12-x)-20=30

5.(12-x) =30+20

5.(12-x) =50

12-x =50:5

12-x =10

x =12-10

x =2

Vậy x = 2

Answer 4

hi

Answer 5

5.(12-x)=30+20=50

12-x=50:5=10

x=12-10=2