Question

20 :( x + 1) = 2

Answer 1

`20:(x+1)=2`

`x+1=20:2`

`x+1=10`

`x=10-1`

`x=9`

Vậy `x=9`

Answer 2

\(20:\left(x+1\right)=2\)

\(x+1=20:2=10\)

\(\Leftrightarrow x=9\)

Answer 3

`x + 1 = 10`

`x = 10 - 1`

`x = 9`

Answer 4

20:(x+1) = 2

x+1 = 20:2 = 10

x = 10-1=9

Vậy x =9