The answer for the blank space is 21.8
Answer:
[6x] + [-7y] + [-4]
Step-by-step explanation:
There are only two like terms in this expression "4x" and "2x." Since they are like terms we can combine them by adding the coefficients and keeping the variable attached. Therefore we can combine 4x and 2x into 6x. Since there are no more like terms, this expression can be simplified to 6x - 7y - 4.
Step-by-step explanation:
The awnser is -6+6 because it would end up being 0, which is not positive nor negative
Answer:
here
Step-by-step explanation:
from left to right
81, 27, 9, 3, 1