231-(x-6)=1339:13

  231-(x-6)=103

         x-6=231-103

          x-6=128

             x=128+6

             x=134

\(231-\left(x-6\right)=1339:13\)

\(231-\left(x-6\right)=103\)

\(x-6=231-103\)

\(x-6=128\)

\(x=134\)

231 - (x - 6) = 1339 : 13

=> 231 - (x - 6) = 103 

=> x - 6 = 231 - 103 

=> x - 6 = 128

=> x =    128 + 6

=> x =  134 

Vậy x = 134  

#)Giải :

\(231-\left(x-6\right)=1339\div13\)

\(\Leftrightarrow231-\left(x-6\right)=103\)

\(\Leftrightarrow x-6=128\)

\(\Leftrightarrow x=134\)

231 - ( x - 6 ) = 1339 : 13

231 - x + 6 = 103

231 - x = 103 - 6

231 - x = 97

         x = 231 - 97 

         x = 134

231-(x-6)=1339:13

=>231-(x-6)=103

=>x-6=231-103

=>x-6=128

=>x=128+6

=>x=134

Hk tốt !

\(231-\left(x-6\right)=1339\div9\)

\(\Leftrightarrow231-x+6=103\)

\(\Leftrightarrow237-x=103\)

\(\Leftrightarrow-x=103-237\)

\(-x=-134\)

\(\Leftrightarrow x=134\)

_Minh ngụy_

\(231-\left(x-6\right)=\frac{1339}{13}\)

\(231-\left(x-6\right)=\frac{1339}{13}=103\)

\(=>231-103=x-6\)

\(=>x-6=128\)

\(=>x=128+6=134\)

\(\Leftrightarrow\)231-x+6=103

\(\Leftrightarrow\)231-x=103-6

\(\Leftrightarrow\)x=231-97

\(\Leftrightarrow\)x=134

231-x+6=103

134-x=0

x=134

231-(x-6)=1339:13

231-(x-6) =103

x -6 =  231-103

x-6 = 128

x=128+6

=>x =134

li-ke

231 – (x- 6) = 1339 : 13

231 – (x – 6) = 103

x – 6 = 231 – 103

x – 6 = 128

x = 128 + 6

x = 134

Vậy x = 134

323+(x-75)=186

x-75=186-323

x-75=-137

x=-137+75

x=-62

231-(x-6)=1339:13

231-(x-6)=103

x-6=231-103

x-6=128

x=128+6

x=134

323 + ( x-75 ) = 186

x - 75 = 323 - 186

x -75 = 137

x = 137 + 75

x = 212

231 - ( x-6 ) = 1339 : 13

231 - ( x-6 ) = 103

x - 6 = 231 - 103

x - 6 = 128

x = 128 + 6

x = 134

231- ( x - 6 ) = 1339 : 13

231- ( x - 6 ) = 103

( x - 6) = 231 - 103

x - 6 = 128

x = 128+6

x= 134