Answer:

Explanation:
The value of x is ⇒ 3x-9=x+7
Solve 3x-9=x+7
Add by 9 from both sides of equation.

Simplify.

Subtract by x from both sides of equation.

Simplify.

Divide by 2 from both sides of equation.

Finally, simplify to find the answer.

X=8, which is our answer.