-115-(17+2x)=20

=>\(2x+17=-115-20=-135\)

=>\(2x=-135-17=-152\)

=>\(x=-\dfrac{152}{2}=-76\)

\(-115-\left(17+2x\right)=20\)

\(=>17+2x=\left(-115\right)-20\)

\(=>17+2x=-135\)

\(=>2x=\left(-135\right)-17\)

\(=>2x=-152\)

\(=>x=\left(-152\right):2\)

\(=>x=-76\)

a) ( x-47) - 115=0

x - 47 = 0 + 115 = 115

x= 115 + 47 = 162

b) 315 + ( 146 -x ) = 401

146 - x = 401 - 315 = 86

x= 146 -86 =60

a) \(\left(x-47\right)-115=0\)

\(x-47=115\)

\(x=115+47\)

\(x=162\)

b)\(315+\left(146-x\right)=401\)

\(146-x=401-315\)

\(146-x=56\)

\(x=146-56\)

\(x=90\)

a) \(\left(x-47\right)-115=0\)

\(x-47=0+115\)

\(x-47=115\)

\(x=115-47\)

\(x=68\)

b)\(315+\left(146-x\right)=401\)

\(146-x=401-315\)

\(146-x=86\)

\(x=146-86\)

\(x=60\)

a ) ( x - 47 ) - 115 =  0

    ( x - 47 )          = 0 + 115 

    ( x - 47 )          = 115

      x                   = 115 + 47

      x                   = 162

b ) 315 + ( 146 - x ) = 401

               ( 146 - x ) = 401 - 315

               (  146 - x ) = 86

                          x    = 146 - 86 

                          x    = 60

 Duyệt nha

a)  (x-47)-115=0=>x-47=115=>x=162

b)315+(146-x)=401=>146-x=86=>x=60

a,(x-47)-115=0

x-47=115

x=162

b,315+(146-x)=401

315+146-x=401

461-x=401

x=60

a) (x - 47) - 115 = 0

=> x - 47 = 0 + 115

=> x - 47 = 115

=> x = 115 + 47

=> x = 162

Vậy x = 162

b) 315 + (146 - x) = 401

=> 146 - x = 401 - 315

=> 146 - x = 86

=> x = 146 - 86

=> x = 60

Vậy x = 60

a, ( x - 47 ) - 115 = 0

x - 47 = 115

x = 162

b, 315 + ( 146 - x ) = 401

315 + 146 - x = 401

461 - x = 401

x = 60

a: =>25-4x=1

=>4x=24

hay x=6

b: =>2x-4=0

hay x=2

c: =>x-35=115

hay x=150

d: =>x-2=12

hay x=14

e: =>x-36=216

hay x=252

(x - 47) - 115 = 0

x – 47 = 0 + 115

x - 47 = 115

x = 115 + 47

x = 162

Vậy x = 162

c) (x – 47) – 115 = 0

(x – 47) = 115

x = 115 +47

x = 162

vậy x = 162