Question

155-10(x+1)=55

giúp mình

Answer 1

\(155-10\left(x+1\right)=55\\ \Rightarrow10\left(x+1\right)=155-55\\ \Rightarrow10\left(x+1\right)=100\\ \Rightarrow x+1=100:10\\ \Rightarrow x+1=10\\ \Rightarrow x=10-1\\ \Rightarrow x=9\)

Answer 2

`155-10(x+1)=55`

`10(x+1)=155-55`

`10(x+1)=100`

`x+1=100:10`

`x+1=10`

`x=10-1`

`x=9`

Answer 3

\(155-10\left(x+1\right)=55\)

\(10\left(x+1\right)=155-55\)

\(10\left(x+1\right)=100\)

\(x+1=100:10\)

\(x+1=10\)

\(x=10-1\)

\(x=9\)

Answer 4

 \(155-10.\left(x+1\right)=55\)

\(\Leftrightarrow10\left(x+1\right)=155-55\)

\(\Leftrightarrow10\left(x+1\right)=100\)

\(\Leftrightarrow x+1=100:10\)

\(\Leftrightarrow x+1=10\)

\(\Leftrightarrow x=9\)