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Answer :

Brandy, this is the solution to the exercise:

We have that 6x + 3 = 9

6x + 3 = 9

• Subtracting 3 at both sides of the equation:

6x + 3 - 3 = 9 - 3

6x = 6

• Dividing by 6 at both sides of the equation:

6x/6 = 6/6

x = 1

In consequence, the correct answer is D. x = 1