Answer:
170
Step-by-step explanation:
Add 160 and 45 and 125
Then subtract it to the total number of students
So 500 minus 330
You multiply 86 by 42.5 because each board is 42.5 and there are 86 boards.
The answer is 5x/2 because all you have to do is add 3x + 2x too make 5x and take 4-2 which is 2 and since it can't be simplified any more, just do 5x/2. Hope this helped! :)
For this case we have the following factorized expression:

Applying distributive property we have:

We add similar terms taking into account that: Equal signs are added and the same sign is placed.

ANswer:
