Answer:
The unknown number is 
Step-by-step explanation:
Let's make the unknown number x.
The sum of 5 TIMES a number (x) & 8 is 9.
Let's write it mathematically.
5x + 8 =9
We are trying to find the unknown number, so let's remove all the numbers from the left side to find x. Minus 8.
5x=1
5x is basically 5 times x, so to find x, we need to divide and from there we can remove 5.
x= 
Answer: 2.11X=11.41
X=9.3
or
211x=1141
930
Step-by-step explanation:
Hi!
The answer is -15n-10p-5q
It is approximately 1830.
M=1000
D=500
C=100
X=10