Answer:
7.78
Step-by-step explanation:
Simple...
you have

and

Just subtract...but first find a common denominator...
Use 40 as the common denominator...

and

So, subtract,

=

Thus, your answer.
Answer:
-19/248
Step-by-step explanation:
The answer is 8n^2
2x2 is 4 x 2 is 8 two n variables so multiple it by 2 and you get your answer