Ta có : x - 43 = ( 57 - x ) - 50

x - 43 = 57 - x - 50

x = 57 - 50 + 43 - x

x = 50 - x

x + x = 50

2x = 50

x = 50 : 2

x = 25

Vậy x = 25

1 câu ngắn gọn =25

Ta có : \(x-43=\left(57-x\right)-50\)

\(\Rightarrow x-43=57-x-50\)

\(\Rightarrow x+x=57-50+43\)

\(\Rightarrow2x=50\)

\(\Rightarrow x=50:2\)

\(\Rightarrow x=25\)

Vậy x=25

=> x - 43 = 7 - x

=> ...

a 43+(9-21)=317-(x-317)

43+(-10)=317-x-317

31=(317-317)-x

31=-x

x=-31

h minh nha

Ta có: \(x-43=\left(57-x\right)-50\)

\(\Leftrightarrow x-43=57-x-50\)

\(\Leftrightarrow x-43-57+x+50=0\)

\(\Leftrightarrow2x-50=0\)

\(\Leftrightarrow2x=50\)

\(\Leftrightarrow x=25\)

Vậy: x=25

\(x-43=\left(57-x\right)-50\)

\(x-43=57-x-50\)

\(x+x=57-50+43\)

\(2x=50\)

\(\Leftrightarrow x=25\)

x - 43 = ( 57 - x ) - 50

x - 43 = 57 - x - 50

x + x = 57 - 50 + 43

x + x = 50

2x = 50

x = 25

Vậy x = 25

\(x-43=\left(57-x\right)-50\)

\(\Rightarrow x-43=57-x-50\)

\(\Rightarrow x+x=57-50+43\)

\(\Rightarrow2x=50\)

\(\Rightarrow x=25\)

Vậy x = 25

<=>x-43=(57-50)-x

<=>x-43=7-x

<=>x+x=43+7

<=>2x=50

=>x=25

Vậy x =25

\(x-43=\left(57-x\right)-50\)

\(x-43=57-x-50\)

\(x-43=7-x\)

\(x+x=7+43\)

\(2x=50\)

\(x=25\)

Bạn xem lời giải của mình nhé:

Giải:

\(x-43=57-x-50\\ x-43=\left(57-50\right)-x\\ x+x=7+43\\ 2x=50\\ x=50:2\\ x=25\)

Chúc bạn học tốt!

\(x-43=57-x-50\)

\(x+x=57-50+43\)

\(2x=50\)

\(x=\frac{50}{2}\)

\(x=25\)

Chúc bạn học tốt

x-43=57-x-50
x-43 = 57-x-50 
2x    =     43+7 
2x    = 50 
x      = 50 : 2 
x      =25 

Vậy x = 25

x-43=(57-x)-50

x-43=57-x-50

x+x =57-50+43

2x   =50

   x  =50:2

   x  =25

sao ko đăng cùng 1 lúc đi

\(x-43=\left(57-x\right)-50\)

\(\Leftrightarrow x-43=57-x-50\)

\(\Leftrightarrow x-43=7-x\)

\(\Leftrightarrow2x=50\)

\(\Leftrightarrow x=25\)