ANSWER
w = 5
EXPLANATION
To solve this equation for w, first, we have to subtract 3 from both sides,
[tex]\begin{gathered} 18-3=3w+3-3 \\ \\ 15=3w \end{gathered}[/tex]And then divide both sides by 3,
[tex]\begin{gathered} \frac{15}{3}=\frac{3w}{3} \\ \\ 5=w \end{gathered}[/tex]Hence, the solution is w = 5.
