x-(17-x)=x-7
x+17+x=x-7
2x-17=x-7
x=-7+17
x=10
Ta có: \(x-\left(17-x\right)=x-7\)
\(\Leftrightarrow x-17+x=x-7\)
\(\Leftrightarrow x=10\)
Vậy \(x=10\)
= x - x = x - 17 - 7
= x - x = x - 10
suy ra x = 10
x - (17 - x) = x - 7
x - 17 + x = x - 7
x - x + x = 17 - 7
x = 10
x -( 17 - x ) = x - 7
=> x - 17 + x = x - 7
=> 2x - 17 = x - 7
=> 2x - x = -7 + 17
=> x = 10
vậy x = 10