Question

 2 mo ngoac x cong 1 dong ngoac tru 1 bang 3

Answer 1

\(2\left(x+1\right)-1=3\\ 2\left(x+1\right)=4\\ x+1=2\\ x=1\)

Answer 2

\(2\left(x+1\right)-1=3\)

\(2\left(x+1\right)=3+1\)

\(2\left(x+1\right)=4\)

\(x+1=4:2\)

\(x+1=2\)

\(x=2-1\)

\(x=1\)

Answer 3

\(2\left(x+1\right)-1=3\)

\(2x+2-1=3\)

\(2x=3+1-2=2\)

\(x=2:2\)

\(x=1\)