how do you Evaluate 3b-2a-9 when a=12 and b=7.

Question

 Evaluate 3b−2a−9 when a=12 and b=7. annswer ???????????????

Answer 1

Hello Jay,

 

Whenever you encounter problems of this nature, what they are asking you to do is "plug in" the given values for the variables.

 

So, we have

 

3b-2a-9

a=12

b=7

 

3(7) - 2(12) - 9 =

21-24-9 = -12