Answer:
-18
Explanation:
a - b
a = -7
b = 11
Insert -7 for 'a' and 11 for 'b'
-7 - 11
= -18
Answer is 763 units thanks
5 ÷ 1/2 => 5 x 2/1 => 10/1 => 10

Now, If the exponent was negative like you asked....
I think the answer is 4.20 hours and minutes planning the last road trip .