Question

x-9=2x-7

 

Answer 1

x - 9 = 2x - 7

=> -9 + 7 = 2x - x

=> x = -2

Vậy x = -2

Ủng hộ mk nha ♡_♡

Answer 2

\(x-9=2x-7\Rightarrow x=-2\)

Answer 3

\(x-9=2x-7\)

\(\Rightarrow x-2x=-7+9\)

\(\Rightarrow-x=2\)

\(\Rightarrow x=-2\)

Answer 4

\(\chi\)- 9 =2\(\chi\)- 7

-9+7=2\(\chi\)- \(\chi\)

-2=\(\chi\)

vậy \(\chi\)= -2

Answer 5

=>-9+7=2x-x

=>-2=x

=>x=-2