\(x-43=\left(57+2x\right)-50\)
\(x-2x=57-50+43\)
\(-x=50\)
\(x=-50\)
=> x-43 = 57+2x-50
=> x-43 = 2x+7
=> 2x = x-43-7 = x-50
=> 50 = x-2x = -x
=> x = 50 : (-1) = -50
Vậy x = -50
Tk mk nha
x - 43 = ( 57 + 2x ) - 50
x - 43 = 2x + 7
x - 2x = 7 + 43
-x = 50
x = -50
x-43=(57+2x)-50
x-43+50=57+2x
x+7=57+2x
x-2x=57-7
-x=50
\(\Rightarrow\)x=-50
vậy x=-50
nhớ k cho mk nha.
fan harry potter<3
x- 43 = (57+2x )- 50
<=> x-43 = 57+2x -50
=> x - 2x = 57 + 43 -50
=> -x = 50
=>x = -50