Question

\(x-43=\left(57-x\right)-50\) 

Giúp mình nha. Cảm ơn !

Answer 1

<=> x - 43 = 57 - x  - 50

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

<=> x - 43 = 7 - x

<=> x + x = 7 + 43

<=> 2x = 50

=> x = 25

Vậy x = -18

Answer 2

x-43=(57-x)-50

=>x-43=57-x-50

=>x-43=7-x

=>x+x=7+43

=>2x=50

=>x=50:2

=>x=25

Answer 3

x-43= (57-x)-50

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

x-43 -57 +x =-50

-100 +2x=-50

2x= -50 +100

2x=-50

x= -50 : 2

x= -25

Answer 4

X = 25

X x 2 = 57 - 50 + 43

X x 2 = 50

X = 50 : 2

X = 25

Answer 5

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

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

<=> x - 43 = 7 - x

<=> x +x = 7 + 43

<=> 2x = 50

=> x = 25

Vậy x = 25

Answer 6

x - 43 = ( 57 - x ) - 50

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

<=> x - 43 = 7 - x

<=> x + x = 7 + 43

<=> 2x = 50

=> x = 25

Answer 7

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

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

      \(x-43=\left(57-50\right)-x\)

      \(x-43=7-x\)

      \(x-\left(-x\right)=7-\left(-43\right)\)

      \(x+x=7+43\)

      \(x.2=50\)

      \(x=50:2\)

      \(x=25\)