Question

Giải phương trình:

-9 + 2x = 0

Answer 1

       -9+2x = 0<=> 2x = 9<=> x = 9/2

Answer 2

Ta có: -9+2x=0

\(\Leftrightarrow2x-9=0\)

\(\Leftrightarrow2x=9\)

\(\Leftrightarrow x=\dfrac{9}{2}\)

Vậy: \(S=\left\{\dfrac{9}{2}\right\}\)

Answer 3

-9+2x=o

=>2x=0+9

=>2x=9

=>x=9:2

=>x-4,5

Vậy x=4,5

Answer 4

-9+2x=o

=>2x=0+9

=>2x=9

=>x=9:2

=>x-4,5

Vậy x=4,5

Answer 5

-9 + 2x = 0

⇔ 2x = 9

⇔ x = 9/2 hay 4,5.