Question

mik cần giúp 

250 - ( x + 20 ) : 2 = 85

Answer 1

`@` `\text {Ans}`

`\downarrow`

`250 - (x+20) \div 2 = 85`

`(x + 20) \div 2 = 250 - 85`

`(x + 20) \div 2 = 165`

`x +20 = 165 \times 2`

`x + 20 = 330`

`x = 330 - 20`

`x = 310`

Vậy, `x = 310.`

Answer 2

\(250-\left(x+20\right):2=85\)

\(\left(x+20\right):2=250-85\)

\(\left(x+20\right):2=165\)

\(x+20=165\times2\)

\(x+20=330\)

\(x=330-20\)

\(x=310\)

Answer 3

250 - (x+20) : 2= 85

<=> (x+20):2= 250-85

<=> (x+20)=( 250 - 85) x 2
<=> x+20= 165 x 2= 330

<=>x= 330-20=310