Question

550 - ( x + 20 ) = 100 : 2

Answer 1

\(550-\left(x+20\right)=50\\ \left(x+20\right)=550-50\\ x+20=500\\ x=480\)

Answer 2

`550 - ( x + 20 ) = 100 : 2`

`550 - x -20 = 50`

`(550-20)-x =50`

`530-x=50`

`x=530-50`

`x=480`

Vậy `x=480`

Answer 3

`550 - (x + 20) = 100 : 2`

`=> 550 - (x + 20) = 50`

`=>           x + 20   = 550 - 50`

`=>          x + 20    = 500`

`=>          x             = 500 - 20`

`=>         x              = 480`

Answer 4

\(550-\left(x+20\right)=100:2\)

\(\Rightarrow550-\left(x+20\right)=50\)

\(\Rightarrow x+20=500\)

\(\Rightarrow x=480\)

Answer 5

\(550 - ( x + 20 ) = 100 : 2\)

\(550 - ( x + 20 ) =50\)

\( x + 20 =550 -50\)

\(x + 20 =500\)

\(x=500-20\)

\(x=480\)

Answer 6

\(550-\left(x+20\right)=50\)

\(\left(x+20\right)=550-50\)

\(x+20=500\)

\(x=480\)

Answer 7

\(550-\left(x+20\right)=100:2\\ \Leftrightarrow-x-20=50-550\\ \Leftrightarrow-x+20=-500\\ \Leftrightarrow x=480\)