The answer would be Addition property of equality i belive
Answer:
Step-by-step explanation:
When we remove coffee beans, then the quantity of beans reduces. So, we have to subtract to find the remaining coffee beans.
q = 1500 - n
Answer:

Step-by-step explanation:
For this, you check to see if any of these variables are the same. There are two x's, and 2 y's. So, you have to multiply x and x, which gives you 2x, and since you multiply the y's it will give you y^2.
So the answer will be 
(7*4)3n is the algebraic expression:)
Answer:
variable
Step-by-step explanation:
that is the textbook definition of variable