Answer:
x= 2
Explanation:
Multiply both sides of the equation by 3, since that it the reciprocal of 1/3.
3x+9= 15- 9(x-2)
Distribute -9 through the parenthesis.
3x+9= 15-9x+18
Add the numbers.
3x+9= 33- 9x
Move the variable to one side.
3x+9= 33- 9x
-3x -3x
9=33-12x
Subtract to both sides.
9= 33-12x
-33 -33
-24= -12x
Divide -12 to both sides.
-24= -12x
-12 -12
x=2