Answer:
-1
Step-by-step explanation:
-2-3-(-4)=-2-3+4=-5+4=-1
Im assuming you meant the 9th term and thats 47
Answer:
Step-by-step explanation:
add the top of one and the bottom of the other then the top of the other and the bottom of one
Answer:
In the given expression 
Variables = m, r
Coefficients = 7, 6 and -3
constant= -8
Step-by-step explanation:
We are given the expression 
We need to give variable, coefficients and constant.
Variable: The value of variable may change. It can be represented by x, y or any other letter
Coefficients: A numerical or constant quality that is placed with the variable. For example in 4x, 4 is coefficient
Constant: It is fixed value. It cannot be changed.
So, in the given expression 
Variables = m, r
Coefficients = 7, 6 and -3
constant= -8