\(10\)

Explanation

First, distribute 3:

3(x - 4) = 18

\(3(x)-(3 \times 4)=18\)

3x – 12 = 18.

Next, isolate 3x by adding 12 on both sides:

3x = 18 + 12.

3x = 30

Finally, Divide both side by 3 to find the value of x:

\(\frac{3\text{x}}{3}=\frac{30}{3}\)

3x/3 = 30/3

x = 10

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