\(230-\left(x-12\right)=1339:13\)

\(230-\left(x-12\right)=103\)

                \(x-12\text{ }=230-103\)

                \(x-12\text{ }=127\)

                \(x\)             \(=127+12\)

               \(x\)              \(=139\)

(x + 2)(x² - 2x + 4) = 1339

x³ + 8 = 1339

x³ = 1331

x³ = 11³

x = 11

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 :

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

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

\(\Leftrightarrow x-6=128\)

\(\Leftrightarrow x=134\)

x là 122 nha bn

k mk nha bn

thanks nhju

231 - ( x - 6 ) = 1339 : 13

231 - ( x - 6 ) = 13

           x - 6   = 231 - 13

           x - 6   = 118

            x        = 118 + 6

            x         = 124

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

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

\(x-6=128\)

\(x=128+6\)

\(x=134\)

Đảm bảo đúng mình học rồi!

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