If you show that the example is showing a false statement then you are disproving the example/problem.
So before i give u the answer i will explain
step 1- Underline key info( 40PIZZA and 120 PEOPLE)
step 2- do 140\40 which then u will get 3( we do this cause we wanna find out how many times this number can go into 120)
step 3- ur answer is 3 pizza per person
First, you need to draw this out. Roughly, it should look a little something like the link i included in this answer. then u just draw a line tracing the points to make a rectangle (sandbox) and decide that the perimeter, or the distance around, would be 3+4+3+4 = 14 feet.
The missing term in the left side of the equation is 7. Therefore:
(6a-7)5a
On the other hand, the missing coefficient in the right side of the equation is 30. Therefore,
30a^2 - 35a
Combining the left and right sides of the equation:
(6a-7)5a = 30a^2-35a
I hope my answer has come to your help. Thank you for posting your question here in Brainly.