#### Answer

x=6

#### Work Step by Step

3x=18
Step 1: is not needed since there are no fractions.
Step 2: is not needed since there are no parentheses.
Step 3: is not needed.
Step 4: the equation is linear.
Step 5: is not needed cause all variable terms on one side
And all numbers on the other side.
Step 6:$ \frac{3x}{3}=\frac{18}{3}\times$ Divide both sides by 3.
x=6
Final Step: check: $3\times6=18$