-28 because if you add 8 to -120 you get -112 then divide it by 4 and you got -28
2 numbers can be represented by the variables x and y.
Set up a system of equations:


The two numbers added together will result in a sum of 33. However, one number subtracted from another will result in a difference of 1.
In both systems of equations, there are inverses of variable y. Therefore, we can combine the systems of equations by adding them together:


Divide both sides by 2 to get x by itself:

One of the numbers will be 17.
Plug the value into one of the equations:

Add y to both sides:

Subtract both sides by 1 to get y by itself:

The two numbers that sum up to 33, with a difference of 1 between them, will be 16 and 17.
Answer:
(a) x+3
(b) 
(c) 
Step-by-step explanation:
We have given that
(a) 
From the algebraic identity we know that

So 
(b) 
We know the algebraic identity

So 
(c) We have given 
We know the algebraic identity


Answer:
The coefficiant would be 8
Step-by-step explanation:
Hope this helps:)