Add 3 to 6, subtract w from the result, then triple what you have
Add 3 to 6;
3 + 6
Subtract w from the result;
3 + 6 - w
Triple what you have (means multiply by 3):
3(3 + 6 - w)
Add 3 to 6;
3 + 6
Subtract w from the result;
3 + 6 - w
Triple what you have (means multiply by 3):
3(3 + 6 - w)