I'm pretty sure the answer would be 2.
Sorry if it's wrong
#4)
opposite of 51 is -51
reciprocal of 51 is 1/51
hope it helps
Answer:
D. 
Step-by-step explanation:
There are six (-2), so it would be D. since C. would just mean
and turn that negative.
You can check using a calculator that (-2)(-2)(-2)(-2)(-2)(-2) would equal 64 while C. equals -64. So the correct answer would be D.
After you combine like terms you will get 5p - 9m.
-3p + 8p is the same thing as 8p - 3, so you get 5p.
-2m + (-7m) is -9m
-3p and 8p are like terms.
-2m and -7m are also like terms.