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Answer:

[tex]\boxed{ \bf x=6}[/tex]

Explanation:

3(x + 3) = 18

⇒ Step 1 - Multiply everything in the brackets by 3:

3x + 9 = 18

Step 2 - Subtract 9 from both sides of the equation:

3x + 9 = 18

     - 9    - 9

3x = 18

Step 3 - Divide both sides of the equation by 3.

[tex]\frac{3x}{3} = \frac{18}{3}[/tex]

x = 6

Answer: x = 3

Step-by-step explanation:

1. Distribute.

  • 3(x+3)=18
  • 3x+9=18

2. Subtract 9 from BOTH sides.

  • 3x+9-9=18-9

3. Simplify.

  • Subtract 9 from BOTH sides.
  • 3x=9 is the answer.

4. Divide BOTH sides of the equation by the same term.

  • [tex]\frac{3x}{3} =\frac{9}{3}[/tex]

5. Simplify.

  • Cancel out the terms that are both in the numerator and the denominator.
  • Divide the numbers.

Therefore, your answer is X = 3

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