Answer:
Rearrange terms
3(2+)+15
3({\color{#c92786}{2+q}})+153(2+q)+15
3(+2)+15
3({\color{#c92786}{q+2}})+153(q+2)+15
2
Distribute
3(+2)+15
{\color{#c92786}{3(q+2)}}+153(q+2)+15
3+6+15
{\color{#c92786}{3q+6}}+153q+6+15
3
Add the numbers
3+6+15
3q+{\color{#c92786}{6}}+{\color{#c92786}{15}}3q+6+15
3+21
3q+{\color{#c92786}{21}}3q+21
Solution
3+21
