Answer:
Expression: 
Value of the expression when
: 
Step-by-step explanation:
Let's first focus on the expression: '6 more than twice a number'. Twice a number is the same as saying two times a number. Let's have that number be represented by
. Twice a number would mean
, and 6 more than that would just be
.
We'll then plug in 5 for
to get the value of the expressinn:

Answer:
they are = to each other
Step-by-step explanation:
-1+z because 7-8 would be -1 and positive 3-3 would just be the variable after