So .6 is essientaly 6 over 10. A mixed number is an integer (whole number) with a fraction. So, you take the 2 and combine it with the 6 over 10. However, it asks for it in simpliest form. Therefore, you recongnize you can divide the 6 and 10 by 2. Your final answer should be 2 and 3 over 5.
Answer:
a = 1/7, b = 0.2, c = 3/9
Step-by-step explanation:
placing it farther along the number line, making 0.2 the red label (b)
is the smallest fraction that you are given, so it will be closest to 0, making it the blue label (a)
so 
is the green label (c)
I assume you want the expression to this so it would be x-y-3
Number 4 is a, and 6 is d, but I'm not sure about 5
