Question

If 3x-9 =12then the value of x is:​

Answer 1

x= 7

Explanation:

`3x - 9 = 12 \\ collect \: like \: terms \\ 3x = 12 + 9 \\ 3x = 21 \\ divide \: both \: sides \: by \: 3`

`(3x)/(3) = (21)/(7) \\ x = 7`

Answer 2

Hey there!

3x-9=12

3x=21

x=7

Let me know if this helps :)