SOLUTION: 3(a+b), for a=2 and b=4. I do not understand any of this. I need help. Thank you!

Algebra ->  Equations -> SOLUTION: 3(a+b), for a=2 and b=4. I do not understand any of this. I need help. Thank you!      Log On


   

Question 357222: 3(a+b), for a=2 and b=4. I do not understand any of this. I need help. Thank you!
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
The concept is called substitution. Replace a by 2 and b by 4. You will get
3(2+4) = 3*6 = 18.